awesome-cpp

C++ framework repository

A curated collection of C++ frameworks, libraries, and resources

A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny things. Inspired by awesome-... stuff.

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Awesome C++ / Standard Libraries

C++ Standard Library A collection of classes and functions, which are written in the core language and part of the C++ ISO Standard itself
Standard Template Library The Standard Template Library (STL)
C POSIX library A specification of a C standard library for POSIX systems
ISO C++ Standards Committee ISO/IEC JTC1/SC22/WG21 - The C++ Standards Committee
The GNU C Library The purpose of this manual is to tell you how to use the facilities of the GNU C Library

Awesome C++ / Frameworks

abseil-cpp 15,168 about 1 month ago Abseil C++ Common Libraries. [Apache2]
Apache C++ Standard Library STDCXX, A collection of algorithms, containers, iterators, and other fundamental components. [retired] [Apache2]
APR Apache Portable Runtime. Another library of cross-platform utility functions. [Apache2]
ASL Adobe Source Libraries provides peer-reviewed and portable C++ source libraries. [MIT]
Boost A large collection of generic C++ libraries. [Boost]
BDE 1,688 about 1 month ago The BDE Development Environment from Bloomberg Labs. [Apache2]
C++ Workflow 13,291 about 1 month ago C++ Parallel Computing and Asynchronous Networking Engine. [Apache2]
CGraph 1,815 about 1 month ago A cross-platform DAG framework based on C++ without any 3rd-party. [MIT]
Cinder A community-developed, free and open source library for professional-quality creative coding. [BSD]
Coost 4,040 5 months ago A tiny boost library in C++11. [MIT]
Cxxomfort A small, header-only library that backports various facilities from more recent C++ Standards to C++03 and later. [MIT]
Dlib 13,623 2 months ago A toolkit for making real world machine learning and data analysis applications in C++. [Boost]
EASTL 8,317 4 months ago Electronic Arts Standard Template Library. [BSD]
ETL 2,274 about 1 month ago Embedded Template Library. [MIT]
ffead-cpp 707 6 months ago Framework for Enterprise Application Development. [Apache2]
Folly 28,577 about 1 month ago An open-source C++ library developed and used at Facebook. [Apache2]
FunctionalPlus 2,141 2 months ago Functional Programming Library for C++. Write concise and readable C++ code. [MIT]
GLib GLib provides the core application building blocks for libraries and applications written in C. [LGPL]
itlib 158 4 months ago A collection of std-like single-header C++ libraries [MIT]
JUCE 6,731 about 1 month ago An all-encompassing C++ class library for developing cross-platform software. [Core-Module: ISC, Rest: GPL2/GPL3/Proprietary]
Kigs framework 83 9 months ago A free and open source C++ modular multi-purpose cross platform RAD framework. [MIT]
libPhenom 1,660 almost 6 years ago libPhenom is an eventing framework for building high performance and high scalability systems in C. [Apache2]
LibSourcey 1,320 about 2 years ago C++11 evented IO for real-time video streaming and high performance networking applications. [LGPL]
LibU 443 about 2 years ago A multiplatform utility library written in C. [BSD]
libxutils 47 about 1 month ago Simple and yet powerful cross-platform C library providing data structures, algorithms and much more. [MIT]
Loki A C++ library of designs, containing flexible implementations of common design patterns and idioms. [MIT]
MiLi 37 over 10 years ago Minimal headers-only C++ Library. [Boost]
OpenFrameworks 10,002 about 1 month ago A cross platform open source toolkit for creative coding in C++. [MIT]
Qt A cross-platform application and UI framework. [GPL/LGPL/Proprietary]
Reason A cross platform framework designed to bring the ease of use of Java, .Net, or Python to developers who require the performance and strength of C++. [GPL2]
ROOT A set of OO frameworks with all the functionality needed to handle and analyze large amounts of data in a very efficient way. Used at CERN. [LGPL]
rpp 168 2 months ago Minimal Rust-inspired C++20 STL replacement. [MIT]
SaneCppLibraries 526 about 1 month ago a set of C++ platform abstraction libraries for macOS, Windows and Linux. [MIT]
Seastar 8,438 about 1 month ago An advanced, open-source C++ framework for high-performance server applications on modern hardware. [Apache-2.0 License]
STLport An exemplary version of STL. [Free]
STXXL Standard Template Library for Extra Large Data Sets. [Boost]
tbox 4,906 about 1 month ago A glib-like multi-platform c library. [Apache2]
Ultimate++ A C++ cross-platform rapid application development framework. [BSD]
Windows Template Library A C++ library for developing Windows applications and UI components. [Public]
Yomm2 358 about 1 month ago Fast, Orthogonal, Open multi-methods. Supersedes [Boost]

Awesome C++ / Artificial Intelligence

ANNetGPGPU 107 over 3 years ago A GPU (CUDA) based Artificial Neural Network library. [LGPL]
btsk 457 over 2 years ago Game Behavior Tree Starter Kit. [zlib]
Evolving Objects A template-based, ANSI-C++ evolutionary computation library which helps you to write your own stochastic optimization algorithms insanely fast. [LGPL]
frugally-deep 1,078 6 months ago Header-only library for using Keras models in C++. [MIT]
Genann 2,017 7 months ago Simple neural network library in C. [zlib]
MXNet 20,791 about 1 year ago Lightweight, Portable, Flexible Distributed/Mobile Deep Learning with Dynamic, Mutation-aware Dataflow Dep Scheduler; for Python, R, Julia, Scala, Go, JavaScript and more
PyTorch 84,978 about 1 month ago Tensors and Dynamic neural networks in Python with strong GPU acceleration
flashlight 5,300 about 2 months ago Flashlight is a fast, flexible machine learning library written entirely in C++. [BSD]
Recast/Detour 6,663 5 months ago (3D) Navigation mesh generator and pathfinder, mostly for games. [zlib]
TensorFlow 186,822 about 1 month ago An open source software library for numerical computation using data flow graphs. [Apache]
oneDNN 3,649 about 1 month ago An open-source cross-platform performance library for deep learning applications. [Apache]
CNTK 17,534 almost 2 years ago Microsoft Cognitive Toolkit (CNTK), an open source deep-learning toolkit. [Boost]
tiny-dnn 5,872 almost 3 years ago A header only, dependency-free deep learning framework in C++11. [BSD]
Veles 905 about 1 year ago Distributed platform for rapid Deep learning application development. [Apache]
Kaldi 14,362 about 2 months ago Toolkit for speech recognition. [Apache]

Awesome C++ / Asynchronous Event Loop

Asio 5,016 about 2 months ago A cross-platform C++ library for network and low-level I/O programming that provides developers with a consistent asynchronous model using a modern C++ approach. [Boost]
Boost.Asio 1,260 about 1 month ago A cross-platform C++ library for network and low-level I/O programming. [Boost]
C++ Actor Framework 3,210 about 1 month ago An Open Source Implementation of the Actor Model in C++. [BSD-3-Clause]
Ichor 205 2 months ago An event queue which focuses on thread safety and provides dependency injection. [MIT]
libev A full-featured and high-performance event loop that is loosely modelled after libevent, but without its limitations and bugs. [BSD and GPL]
libevent An event notification library. [BSD]
libhv 6,880 about 2 months ago Cross-platform event loop library. [BSD]
libuv 24,499 about 1 month ago Cross-platform asynchronous I/O. [BSD]
promise-cpp 680 9 months ago Header only library that implements Promise/A+ standard. [Anti-996]
uvw 1,880 about 1 month ago C++ wrapper for libuv. [MIT]
uv-cpp 787 about 1 year ago a simple interface, high-performance network library based on C++11. [MIT]

Awesome C++ / Audio

Amplitude Audio SDK 37 about 1 month ago A cross-platform audio engine designed with the needs of games in mind. [Apache-2.0]
Aubio 3,336 6 months ago A library for audio and music analysis.[GPL-3.0]
AudioFile 975 2 months ago A simple C++ library for reading and writing audio files. [MIT]
audioFlux 2,940 8 months ago A C library for audio and music analysis, feature extraction. [MIT]
dr_libs 1,285 9 months ago Single file audio decoding libraries for C and C++. [Unlicense]
FMOD An easy to use crossplatform audio engine and audio content creation tool for games. [Free for non-commercial/Commercial]
KFR Fast, modern C++ DSP framework, FFT, FIR/IIR filters, Sample Rate Conversion. [GPL/Proprietary]
LAME LAME is a high quality MPEG Audio Layer III (MP3) encoder. [LGPL]
libsndfile 1,483 2 months ago C library with C++ wrapper for reading and writing files containing sampled sound through one standard library interface. [LGPL-2.1]
libsoundio 1,958 7 months ago C library for cross-platform real-time audio input and output. [MIT]
Maximilian 1,597 12 months ago C++ Audio and Music DSP Library. [MIT]
OpenAL Open Audio Library - A crossplatform audio API. [BSD/LGPL/Proprietary]
miniaudio 4,151 3 months ago Single file audio playback and capture library. [Unlicense]
ni-media 244 5 months ago C++ library for reading and writing audio files. [MIT]
Opus A totally open, royalty-free, highly versatile audio codec. [BSD]
PortAudio PortAudio is a free, cross-platform, open-source, audio I/O library. [MIT]
rnnoise 4,191 5 months ago Recurrent neural network for audio noise reduction. [BSD-3-Clause]
SELA 210 almost 5 years ago SimplE Lossless Audio. [MIT]
SoLoud 1,812 5 months ago Easy, portable audio engine for games. [zlib]
Speex A free codec for free speech. Obsoleted by Opus. [BSD]
Tonic 523 almost 5 years ago Easy and efficient audio synthesis in C++. [Unlicense]
Vorbis Ogg Vorbis is a fully open, non-proprietary, patent-and-royalty-free, general-purpose compressed audio format. [BSD]
minimp3 1,621 5 months ago Public domain, header-only MP3 decoder with clean-room implementation. [CC0]
Verovio 689 about 1 month ago Verovio is a fast and lightweight music notation engraving library. [LGPL]
Wav2Letter++ 6,398 about 2 months ago Public domain, a fast open source speech processing toolkit written entirely in C++ and uses the ArrayFire tensor library and the flashlight machine learning library for maximum efficiency. [BSD]

Awesome C++ / Biology

BioC++ C++ Computational Libraries for Bioinformatics. [BSD]
Chaste An open source C++ library for the computational simulation of mathematical models developed for physiology and biology. [BSD]
libsequence A C++ library for representing and analyzing population genetics data. [GPL]
SeqAn Algorithms and data structures for the analysis of sequences with the focus on biological data. [BSD/3-clause]
Vcflib 628 about 2 months ago A C++ library for parsing and manipulating VCF files. [MIT]
Wham 104 almost 2 years ago Structural variants (SVs) in Genomes by directly applying association tests to BAM files. [MIT]

Awesome C++ / BitTorrent

jech/dht 700 almost 2 years ago BitTorrent DHT library in C. [MIT]
libtorrent 5,303 about 1 month ago (a.k.a. libtorrent-rasterbar) - An efficient feature complete C++ bittorrent implementation. [BSD]
LibTorrent 897 about 1 month ago (a.k.a. libtorrent-rakshasa) - BitTorrent library. [GPL]
libutp 1,115 about 1 year ago uTorrent Transport Protocol library. [MIT]

Awesome C++ / Chemistry

d-SEAMS 35 5 months ago A molecular dynamics trajectory analysis engine in C++ and Lua with Nix. It is an acronym for Deferred Structural Elucidation Analysis for Molecular Simulations. [GPL]
gromacs 720 about 1 month ago A message-passing parallel molecular dynamics implementation. [GPL]
Reaktoro 169 about 2 months ago A computational framework in C++ and Python for modeling chemically reactive systems. [LGPL]
LAMMPS 2,274 about 1 month ago A classical molecular dynamics code with a focus on materials modeling. It's an acronym for Large-scale Atomic/Molecular Massively Parallel Simulator. [GPL]
MADNESS 182 about 1 month ago Multiresolution Adaptive Numerical Environment for Scientific Simulation. [GPL]
MPQC 68 over 1 year ago The Massively Parallel Quantum Chemistry program, MPQC, computes properties of atoms and molecules from first principles using the time independent Schrödinger equation. [GPL]
ORCA An ab initio quantum chemistry program package that contains modern electronic structure methods. [Academic]
Psi 993 about 1 month ago An ab initio computational chemistry package. [GPL]

Awesome C++ / CLI

Argh! 1,336 11 months ago A minimalist, frustration-free, header-only argument handler. [BSD]
argparse 2,769 about 2 months ago Argument Parser for Modern C++. [MIT]
args 1,420 about 1 month ago A simple header-only C++ argument parser library. [MIT]
barkeep 150 about 1 month ago Small C++ header to display async animations, counters, and progress bars. [Apache-2.0]
Boost.Program_options 110 about 1 month ago A library to obtain program options via conventional methods such as command line and config file. [Boost]
cli 1,242 3 months ago A cross-platform header only C++14 library for interactive command line interfaces (Cisco style). [Boost]
CLI11 3,428 about 1 month ago Header only single or multi-file C++11 library for simple and advanced CLI parsing. [BSD]
clipp 1,230 8 months ago Easy to use, powerful and expressive command line argument handling for C++11/14/17 contained in a single header file. [MIT]
cpp-terminal 539 about 1 month ago Small header only C++ library for writing multiplatform terminal applications. [MIT]
Ctrl+C 24 2 months ago Crossplatform C++11 library to handle Ctrl+C event in custom functions. [MIT]
cxxopts 4,270 about 1 month ago Lightweight C++ command line option parser. [MIT]
docopt.cpp 1,047 9 months ago A library to generate option parser from docstring. [MIT/Boost]
FINAL CUT 1,014 about 1 month ago Library for creating terminal applications with text-based widgets. [LGPL]
FTXUI 7,070 about 1 month ago C++ Functional Terminal User Interface. [MIT]
gflags Commandline flags module for C++. [BSD]
imtui 3,136 9 months ago Immediate Mode Text-based User Interface. [MIT]
indicators 3,049 6 months ago Activity indicators for Modern C++. [MIT]
linenoise 3,829 5 months ago A small self-contained alternative to readline and libedit. [BSD-2-Clause]
linenoise-ng 359 over 4 years ago A small, portable GNU readline replacement for Linux, Windows and MacOS which is capable of handling UTF-8 characters. [BSD]
Lyra 493 4 months ago A simple to use, composable, command line parser for C++ 11 and beyond. [Boost]
Ncurses A terminal user interface. [MIT]
oof 833 4 months ago Convenient, high-performance RGB color and position control for console output. [MIT]
PDCurses 1,057 6 months ago Public domain curses library with both source code and pre-compiled library available. [PublicDomain]
popl 169 almost 2 years ago A single-header templated command line arguments and ini file parser for C++ 11 and beyond. [MIT]
replxx 692 9 months ago A readline and libedit replacement that supports UTF-8, syntax highlighting, hints, works on Unix and Windows. [BSD]
tabulate 1,966 7 months ago Table Maker for Modern C++. [MIT]
TCLAP A mature, stable and feature-rich library for defining and accessing command line arguments in ANSI C++. [MIT]
termbox 1,974 over 4 years ago A C library for writing text-based user interfaces. [MIT]
TermOx 677 6 months ago C++17 Terminal User Interface(TUI) Library. [MIT]
tuibox 138 about 1 year ago A single-header terminal UI (TUI) library, capable of creating mouse-driven, interactive applications on the command line. [MIT]

Awesome C++ / Compression

bit7z 662 about 1 month ago A C++ static library offering a clean and simple interface to the 7-zip shared libraries. [MPL2]
Brotli 13,639 about 1 month ago Brotli compression format. Developed by Google. [MIT]
bzip2 A freely available, patent free, high-quality data compressor. [BSD]
bzip3 697 about 1 month ago A better and stronger spiritual successor to BZip2. [LGPL]
FastLZ 447 6 months ago Small & portable byte-aligned LZ77 compression. [MIT]
FiniteStateEntropy 1,344 10 months ago New generation entropy codecs : Finite State Entropy and Huff0
heatshrink 1,334 8 months ago data compression library for embedded/real-time systems [ISC]
Kanzi 140 about 1 month ago a modern, modular, portable and efficient lossless data compressor implemented in C++. [Apache-2.0]
KArchive A library for creating, reading, writing and manipulating file archives like zip and tar. It also provides transparent compression and decompression of data, using formats like gzip, via a subclass of QIODevice. [LGPL]
libarchive 3,066 about 1 month ago Multi-format archive and compression library. [New BSD]
LZ4 10,506 about 1 month ago Extremely Fast Compression algorithm. [BSD]
LZFSE 1,774 over 2 years ago LZFSE compression library and command line tool. Developed by Apple
LZHAM Lossless data compression library with a compression ratio similar to LZMA but with much faster decompression. [BSD]
LZMA The default and general compression method of 7z format. [PublicDomain]
LZMAT An extremely fast real-time lossless data compression library. [GPL]
miniz 2,249 about 1 month ago Single C source file Deflate/Inflate compression library with zlib-compatible API, ZIP archive reading/writing, PNG writing. [MIT]
Minizip 1,249 about 2 months ago Zlib with latest bug fixes that supports PKWARE disk spanning, AES encryption, and IO buffering. [zlib]
minizip-ng 1,249 about 2 months ago Fork of the popular zip manipulation library found in the zlib distribution. [zlib]
PhysicsFS A library to provide abstract access to various archives. It is intended for use in video games, and the design was somewhat inspired by Quake 3's file subsystem. [zlib]
Rapidgzip 381 2 months ago Gzip Decompression and Random Access for Modern Multi-Core Machines. [Apache-2/MIT]
smaz 1,174 about 5 years ago Small strings compression library. [BSD]
Snappy A fast compressor/decompressor. [BSD]
ZLib A very compact compression library for data streams. [zlib]
zlib-ng 1,592 about 1 month ago zlib for the "next generation" systems. Drop-In replacement with some serious optimizations. [zlib]
zstd 23,936 about 1 month ago Zstandard - Fast real-time compression algorithm. Developed by Facebook. [BSD]
ZZIPlib Provides read access on ZIP-archives. [MPL/LGPL]

Awesome C++ / Concurrency

alpaka 4 almost 5 years ago Abstraction library for parallel kernel acceleration. [LGPLv3+]
ArrayFire 4,587 about 1 month ago A general purpose GPU library. [BSD]
Async++ 1,356 3 months ago A lightweight concurrency framework for C++11, inspired by the Microsoft PPL library and the N3428 C++ standard proposal. [MIT]
Boost.Compute 1,566 about 1 month ago A C++ GPU Computing Library for OpenCL. [Boost]
Bolt 372 almost 9 years ago A C++ template library optimized for GPUs. [Apache2]
BS::thread_pool 2,252 8 months ago A fast, lightweight, and easy-to-use C++17 thread pool library [MIT]
Channel 421 5 months ago Thread-safe container for sharing data between threads. [MIT]
ck 2,409 about 1 month ago Concurrency primitives, safe memory reclamation mechanisms and non-blocking data structures. [BSD]
concurrentqueue 10,134 over 1 year ago A fast multi-producer, multi-consumer lock-free concurrent queue for C++11. [BSD,Boost]
Coros 310 4 months ago An easy-to-use and fast library for task-based parallelism, utilizing coroutines. [BSL-1.0]
CUB 83 11 months ago CUB provides state-of-the-art, reusable software components for every layer of the CUDA programming mode. [New BSD]
cuda-api-wrappers 804 about 1 month ago Lightweight, Modern-C++ wrappers for the CUDA GPU programming runtime API. [BSD]
cupla 4 almost 5 years ago C++ API to run CUDA/C++ on OpenMP, Threads, TBB, ... through Alpaka. [LGPLv3+]
C++React 1,026 over 3 years ago A reactive programming library for C++11. [Boost]
FiberTaskingLib 939 10 months ago Task-based multi-threading library that supports task graphs with arbitrary dependencies. [Apache]
HPX 2,548 about 1 month ago A general purpose C++ runtime system for parallel and distributed applications of any scale. [Boost]
Intel Games Task Scheduler 449 about 2 years ago A task scheduling framework designed for the needs of game developers. [MIT]
Intel Parallel STL 727 about 1 month ago Intel® implementation of C++17 STL for C++11 and above. [Apache2]
Intel TBB Intel® Threading Building Blocks. [Apache2]
junction 1,409 over 4 years ago A library of concurrent data structures in C++. [BSD]
Kokkos 2,032 about 1 month ago A performance portable programming model for parallel execution and memory abstraction. [BSD]
libcds 2,571 over 1 year ago A C++ library of Concurrent Data Structures. [BSD]
Libclsph 52 almost 9 years ago An OpenCL based GPU accelerated SPH fluid simulation library. [MIT]
libdill 1,692 9 months ago Introduces structured concurrency in C. [MIT]
libdispatch 2,478 about 1 month ago Grand Central Dispatch (GCD), developed by Apple Inc., is a task parallelism technology based on the thread pool pattern. libdispatch is a library that provides the implementation of GCD's services. [Apache-2.0]
libfork 620 3 months ago A bleeding-edge, lock-free, wait-free, continuation-stealing tasking library built on C++20's coroutines. [MPL-2.0]
libmill 2,741 almost 4 years ago Introduces Go-style concurrency in C. [MIT]
marl 1,889 about 1 month ago Marl is a hybrid thread / fiber task scheduler written in C++ 11. [Apache-2.0]
moderngpu 1,684 over 2 years ago moderngpu is a productivity library for general-purpose computing on GPUs. It is a header-only C++ library written for CUDA. The unique value of the library is in its accelerated primitives for solving irregularly parallel problems. [FreeBSD & Copyright, Sean Baxter]
NCCL 3,306 4 months ago Optimized primitives for collective multi-GPU communication. [BSD]
Neco 1,152 6 months ago Concurrency library for C (coroutines). [MIT]
OpenCL The open standard for parallel programming of heterogeneous systems
OpenMP The OpenMP API
rotor 349 3 months ago Event loop friendly C++ actor micro framework. [MIT]
SObjectizer 497 about 2 months ago An implementation of Actor, Publish-Subscribe, and CSP models in one rather small C++ framework. [BSD-3-Clause]
Quantum 579 5 months ago A powerful C++ coroutine dispatcher framework built on top of
RaftLib The RaftLib C++ library, streaming/dataflow concurrency via C++ iostream-like operators. [Apache2]
readerwriterqueue 3,800 6 months ago A fast single-producer, single-consumer lock-free queue for C++. [BSD]
stdgpu 1,177 about 2 months ago Efficient STL-like Data Structures on the GPU. [Apache2]
Taskflow 10,338 about 1 month ago A General-purpose Parallel and Heterogeneous Task Programming System. (renamed from Cpp-Taskflow) [MIT]
ThreadPool 8,013 6 months ago A simple C++11 Thread Pool implementation [zlib]
Thrust A parallel algorithms library which resembles the C++ Standard Template Library (STL). [Apache2]
transwarp 623 over 1 year ago A header-only C++ library for task concurrency. [MIT]
VexCL 704 3 months ago A C++ vector expression template library for OpenCL/CUDA. [MIT]
STAPL A C++ parallel programming framework designed to work on both shared and distributed memory parallel computers. [BSD]
concurrencpp 2,347 5 months ago A general concurrency library containing tasks, executors, timers and C++20 coroutines to rule them all

Awesome C++ / Configuration

inifile-cpp 374 8 months ago A header-only and easy to use Ini file parser for C++. [MIT]
inih 2,506 3 months ago Simple .INI file parser in C, good for embedded systems. [BSD-3-Clause]
inih 440 4 months ago Single header only C++ version of . [BSD-3-Clause]
ini-cpp 38 about 1 month ago Single header only C++ version, with some handy read/write interface, extend from . [BSD-3-Clause]
iniparser 984 6 months ago INI file parser. [MIT]*
inipp 285 4 months ago Simple header-only C++ ini parser and generator. [MIT]
libconfig 1,130 about 1 month ago C, C++ library for processing structured configuration files. [LGPL-2.1]
libconfuse 482 11 months ago Small configuration file parser library for C. [ISC]
mINI 542 4 months ago INI file reader and writer. [MIT]
simpleini 1,137 about 1 month ago Cross-platform C++ library providing a simple API to read and write INI-style configuration files. [MIT]
toml++ 1,605 2 months ago Header-only TOML parser and serializer for C++17 and later. [MIT]
toml11 1,054 about 2 months ago a C++11 (or later) header-only toml parser/encoder depending only on C++ standard library. [MIT]

Awesome C++ / Containers

C++ B-tree 74 over 10 years ago A template library that implements ordered in-memory containers based on a B-tree data structure. [Apache2]
dynamic_bitset 155 about 2 months ago Simple Useful Libraries: C++17/20 header-only dynamic bitset. [MIT]
fixed-containers 395 about 1 month ago Header-only C++20 library that provides fixed capacity constexpr containers. [MIT]
flat_hash_map 1,721 over 1 year ago A very fast flat hashtable with Fibonacci hashing
frozen 1,342 5 months ago a header-only, constexpr alternative to gperf for C++14 users. [Apache-2.0]
Hashmaps 254 about 3 years ago Implementation of open addressing hash table algorithms in C++. [MIT]
hat-trie 796 4 months ago C++ implementation of a fast and memory efficient HAT-trie. [MIT]
Hopscotch map 731 4 months ago A fast header-only hash map which uses hopscotch hashing for collisions resolution. [MIT]
LSHBOX 286 over 7 years ago A c++ toolbox of locality-sensitive hashing (LSH), provides several popular LSH algorithms, also support Python and MATLAB. [GPL]
parallel-hashmap 2,587 about 1 month ago A family of header-only, very fast and memory-friendly hashmap and btree containers [Apache2]
PGM-index 792 about 2 months ago A data structure that enables fast lookup, predecessor, range searches and updates in arrays of billions of items using orders of magnitude less space than traditional indexes. [Apache2]
plf::colony 400 about 1 month ago An unordered "bag"-type container which outperforms std containers in high-modification scenarios while maintaining permanent pointers to non-erased elements regardless of insertion/erasure. [zLib]
plf::list 150 2 months ago A std::list implementation which removes range splicing in order to enable cache-friendlier structure, yielding significant performance gains. [zLib]
plf::stack 64 2 months ago A replacement container for the std::stack container adaptor, with better performance than any std container in a stack context. [zLib]
ring_span lite 154 8 months ago A simplified implementation of Arthur O'Dwyer's ring_span implementation ie. a circular buffer view. [MIT]
robin-hood-hashing 1,536 over 1 year ago Fast & memory efficient hashtable based on robin hood hashing for C++14. [MIT]
robin-map 1,294 4 months ago Fast hash map and hash set using robin hood hashing. [MIT]
sparsepp 1,257 over 1 year ago A fast, memory efficient hash map for C++. [BSD 3-clause]
st_tree 96 almost 3 years ago A fast and flexible c++ template class for tree data structures. [Apache-2.0]
svector 97 8 months ago Compact SVO optimized vector for C++17 or higher. [MIT]
tree.hh 135 6 months ago An STL-like C++ header-only tree library. [GPL2+]
unordered_dense 968 about 2 months ago A fast & densely stored hashmap and hashset based on robin-hood backward shift deletion. [MIT]

Awesome C++ / Cryptography

Bcrypt A cross platform file encryption utility. Encrypted files are portable across all supported operating systems and processors. [BSD]
BeeCrypt A portable and fast cryptography library. [LGPLv2.1+]
Botan A crypto library for C++. [BSD-2]
Crypto++ 4,939 6 months ago A free C++ class library of cryptographic schemes. [Boost]
digestpp 198 6 months ago C++11 header-only message digest (hash) library. [PublicDomain]
GnuPG A complete and free implementation of the OpenPGP standard. [GPL]
GnuTLS A secure communications library implementing the SSL, TLS and DTLS protocols. [LGPL2.1]
Libgcrypt A general purpose cryptographic library originally based on code from GnuPG. [LGPLv2.1+]
LibreSSL A free version of the SSL/TLS protocol forked from OpenSSL in 2014. [?]
libsodium 12,372 about 1 month ago P(ortable|ackageable) NaCl-based crypto library, opinionated and easy to use. [ISC]
libhydrogen 637 3 months ago A lightweight, secure, easy-to-use crypto library suitable for constrained environments. [ISC]
LibTomCrypt 1,587 about 1 month ago A fairly comprehensive, modular and portable cryptographic toolkit. [WTFPL]
mbedTLS 5,594 about 1 month ago An open source, portable, easy to use, readable and flexible SSL library, previously known as PolarSSL. [Apache2]
Nettle A low-level cryptographic library. [LGPL]
OpenSSL 26,159 about 1 month ago A robust, commercial-grade, full-featured, and Open Source cryptography library. [Apache]
retter 99 almost 8 years ago A collection of hash functions, ciphers, tools, libraries, and materials related to cryptography
s2n 4,544 about 1 month ago An implementation of the TLS/SSL protocols. [Apache]
sha1collisiondetection 1,329 6 months ago Library and command line tool to detect SHA-1 collision in a file. [MIT]
Tink 13,511 9 months ago A multi-language, cross-platform library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse. [Apache-2.0]
Tiny AES in C 4,329 4 months ago Small portable AES128/192/256 in C. [PublicDomain]
Themis 1,879 4 months ago crypto library for painless data security, providing symmetric and asymmetric encryption, secure sockets with forward secrecy, for mobile and server platforms. [Apache2]
HEhub 91 about 2 years ago A library for homomorphic encryption and its applications. [Apache2]

Awesome C++ / CSV

commata 13 about 1 month ago Just another header-only C++17 CSV parser. [Unlicense]
csv2 567 about 1 year ago Fast CSV parser for modern C++. [MIT]
Csv::Parser 30 8 months ago Compile-time and runtime CSV parser written in C++17. [Zlib]
Fast C++ CSV Parser 2,167 5 months ago Small, easy-to-use and fast header-only library for reading CSV files. [BSD-3-Clause]
Glaze 1,414 about 1 month ago High performance, header only, CSV library with reflection support. [MIT]
lazycsv 80 8 months ago A fast, lightweight and single-header csv parser for modern C++. [MIT]
ssp 51 10 months ago A header only "csv" parser which is fast and versatile with modern C++ api. [MIT]
Vince's CSV Parser 926 6 months ago A fast, self-contained, streaming C++17 CSV parser with optional type-casting and statistics. [MIT]

Awesome C++ / Database

ClickHouse 308 about 2 months ago C++ client for ClickHouse DBMS. [Apache2]
CrossDB 193 2 months ago Ultra High-performance Lightweight Embedded and Server OLTP RDBMS. [MPL-2.0]
DuckDB in-process SQL OLAP Database Management System. [MIT]
hiberlite 714 over 1 year ago C++ Object-relational mapping for sqlite3. [BSD]
Hiredis 6,283 2 months ago A minimalistic C client library for the Redis database. [BSD]
Infinity 2,780 about 1 month ago The AI-native database built for LLM applications, providing incredibly fast vector and full-text search. [Apache2]
Kuzu 1,454 about 1 month ago Embeddable property graph database management system built for query speed and scalability. Implements Cypher. [MIT]
Kvrocks 3,612 about 1 month ago A distributed key value NoSQL database that uses RocksDB as storage engine and is compatible with Redis protocol. [Apache2]
LevelDB 36,769 5 months ago A fast key-value storage library written at Google that provides an ordered mapping from string keys to string values. [BSD]
libpg_query 1,216 about 1 month ago C library for accessing the PostgreSQL parser outside of the server environment. [BSD-3-Clause]
libpqxx 1,049 about 2 months ago The official C++ client API for PostgreSQL. [BSD-3-Clause]
LMDB Very fast embedded key/value store with full ACID semantics. [OpenLDAP]
LMDB++ 273 about 4 years ago C++11 wrapper for the LMDB embedded database library. [PublicDomain]
mgclient 38 5 months ago C/C++ Memgraph Client. [Apache2]
MongoDB C Driver 817 about 1 month ago MongoDB client library for C. [Apache2]
MongoDB C++ Driver 1,048 about 1 month ago C++ driver for MongoDB. [Apache2]
MongoDB Libbson 347 over 4 years ago A BSON utility library. [Apache2]
MySQL++ A C++ wrapper for MySQL's C API. [LGPL]
nanodbc 340 5 months ago A small C++ wrapper for the native C ODBC API. [MIT]
ODB An open-source, cross-platform, and cross-database object-relational mapping (ORM) system for C++. [GPLv2]
redis3m 190 over 5 years ago Wrapper of hiredis with clean C++ interface, supporting sentinel and ready to use patterns. [Apache2]
Reindexer 776 about 1 month ago Embeddable, in-memory, document-oriented database with a high-level Query builder interface. [Apache2]
RocksDB 28,801 about 1 month ago Embedded key-value store for fast storage from facebook. [BSD]
SimDB 537 about 1 year ago High performance, shared memory, lock free, cross platform, single file, minimal dependencies, C++11 key-value store. [Apache2]
SOCI 1,430 about 2 months ago A database abstraction layer for C++. [Boost]
Speedb 925 7 months ago Community-led project: A RocksDB compliant high performance scalable embedded key-value store. [Apache2]
SQLite A completely embedded, full-featured relational database in a few 100k that you can include right into your project. [PublicDomain]
SQLiteC++ 2,275 4 months ago SQLiteC++ (SQLiteCpp) is a smart and easy to use C++ SQLite3 wrapper. [MIT]
sqlite_modern_cpp 905 6 months ago Header only C++14 wrapper around sqlite library. [MIT]
sqlite_orm 2,330 about 1 month ago SQLite ORM light header only library for modern C++. [AGPL + paid MIT]
sqlpp11 2,483 about 1 month ago A type safe embedded domain specific language for SQL queries and results in C++. [BSD-2-Clause]
TileDB 1,878 about 1 month ago Fast Dense and Sparse Multidimensional Array DBMS. [MIT]
TinyORM 259 about 1 month ago Modern C++ ORM library. [MIT]
UnQLite 2,125 8 months ago A self-contained, serverless, zero-configuration, transactional NoSQL engine. [BSD-2-Clause]
upscaledb An embedded "typed" key/value store with a built-in query interface. [GPLv3]
TigerBeetleDB C++ client (Community) 10 about 1 month ago TigerBeetle is a financial accounting database designed for mission critical safety and performance to power the future of financial services. [BSL-1.0]
Trilogy 715 about 1 month ago a client library for MySQL-compatible database servers, designed for performance, flexibility, and ease of embedding. [MIT]
UStore 556 over 1 year ago Multi-Modal database for BLOBs, JSON, and graphs. [Apache2]
Velox 3,557 about 1 month ago A C++ vectorized database acceleration library aimed to optimizing query engines and data processing systems. [Apache-2.0]

Awesome C++ / Data visualization

matplotplusplus 4,356 3 months ago C++ Graphics Library for Data Visualization. [MIT]

Awesome C++ / Debug

backward-cpp 3,834 7 months ago A beautiful stack trace pretty printer for C++. [MIT]
Bencher A suite of continuous benchmarking tools designed to catch performance regressions in CI. [MIT]/[Apache2]
benchmark 9,113 about 1 month ago Google provided small microbenchmark support library. [Apache2]
Boost.Test 183 about 1 month ago Boost Test Library. [Boost]
check 1,081 6 months ago Check is a unit testing framework for C. [LGPL-2.1]
doctest 6,010 about 2 months ago The lightest feature rich C++ single header testing framework. [MIT]
Catch2 18,841 about 2 months ago A modern, C++-native, test framework for unit-tests, TDD and BDD. [Boost]
Celero 828 4 months ago C++ Benchmarking Framework. [Apache2]
cpp-dump 308 3 months ago A C++ library for debugging purposes that can print any variable, even user-defined types. [MIT]
CppUTest 1,380 about 2 months ago Unit testing and mocking framework for C/C++. [BSD-3-clause]
CUTE C++ Unit Testing Easier. [LGPL3]
CMocka unit testing framework for C with support for mock objects. [Apache2]
CppBenchmark 285 10 months ago Performance benchmark framework for C++ with nanoseconds measure precision. [MIT]
Cpptrace 754 about 1 month ago A simple, portable, and self-contained C++ stacktrace library supporting C++11 and greater. [MIT]
CppUnit C++ port of JUnit. [LGPL2]
CTest The CMake test driver program. [BSD]
dbg-macro 3,019 about 1 year ago A dbg(…) macro for C++. [MIT]
DebugViewPP 1,043 7 months ago Debug logging viewer. [Boost]
Deleaker A tool for resource leak detection, including memory, GDI and handle leaks
FakeIt 1,267 3 months ago Simple mocking framework for C++. [MIT]
fff 794 about 1 year ago A micro-framework for creating fake C functions. [MIT]
Google Mock 35,046 about 1 month ago A library for writing and using C++ mock classes. [BSD]
Google Test 35,046 about 1 month ago Google C++ Testing Framework. [BSD]
ig-debugheap 181 about 9 years ago Multiplatform debug heap useful for tracking down memory errors. [BSD]
libassert 557 about 1 month ago The most over-engineered C++ assertion library. [MIT]
libtap 252 about 1 year ago Write tests in C. [GPL2]
microprofile 1,472 3 months ago Profiler with web-view for multiple platforms. [Unlicense]
MinUnit 578 about 1 year ago A minimal unit testing framework for C self-contained in a single header file. [MIT]
Mockator Eclipse CDT plug-in for C++ Seams and Mock Objects
nanobench 1,459 3 months ago Simple, fast, accurate single-header microbenchmarking functionality for C++11/14/17/20. [MIT]
Nanotimer 135 9 months ago A simple low-overhead cross-platform timer class for benchmarking. [zLib]
Nonius 361 almost 5 years ago A C++ micro-benchmarking framework. [CC]
Remotery 3,160 5 months ago Single C File Profiler with Web Viewer. [Apache2]
snitch 269 about 1 month ago Lightweight C++20 testing framework. [Boost]
Touca 498 6 months ago Open-source regression testing system that you can self-host. [Apache2]
UnitTest++ 557 about 1 year ago A lightweight unit testing framework for C++. [MIT/X Consortium license]
Unity 4,162 5 months ago Simple Unit Testing for C. [MIT]
utest.h 853 5 months ago Single header unit testing framework for C and C++. [Unlicense]
μt 1,274 2 months ago C++20 single header/single module, macro-free μ(micro)/Unit Testing Framework. [Boost]
VLD Visual Leak Detector. A free, robust, open-source memory leak detection system for Visual C++

Awesome C++ / Documentation

Doxide 65 about 2 months ago Modern documentation for modern C++, configure with YAML, output Markdown. [Apache 2.0]
doxygen 5,742 about 1 month ago The de facto standard tool for generating documentation from annotated C++ sources. [GPL2]
doxyrest 306 6 months ago A compiler from Doxygen XML to reStructuredText for Sphinx. [MIT]
hdoc 311 5 months ago The modern documentation tool for C++. [AGPL/Proprietary]
Natural Docs 203 about 1 month ago Natural Docs is an open source documentation generator for multiple programming languages. [AGPL/Proprietary]
Sphinx 6,658 about 1 month ago Sphinx makes it easy to create intelligent and beautiful documentation. [BSD-2-Clause]

Awesome C++ / DSP

DSPFilters 1,873 over 1 year ago A collection of useful C++ classes for digital signal processing. [MIT]
FFTW A C library for computing the DFT in one or more dimensions. [GPL]
iir1 653 about 1 month ago IIR Realtime C++ filter library. [MIT]
kissfft 1,506 6 months ago A Fast Fourier Transform (FFT) library that tries to Keep it Simple, Stupid. [BSD-3-Clause]
pocketfft 79 about 2 months ago FFT implementation based on FFTPack, but with several improvements. [BSD-3-Clause]
wavelib 385 about 2 months ago C implementation of 1D and 2D wavelet transforms. [BSD-3-Clause]

Awesome C++ / Font

Fontconfig Font configuration and customization library. [MIT]
FreeType FreeType is a freely available software library to render fonts. [FTL & GPLv2]
otfcc 428 over 2 years ago A C library and utility used for parsing and writing OpenType font files. [Apache-2.0]
harfbuzz 4,200 about 1 month ago A text shaping engine. [Old MIT]
libschrift 479 10 months ago A lightweight TrueType font rendering library. [ISC]

Awesome C++ / Game Engine

Acid 1,780 over 1 year ago A high speed C++17 Vulkan game engine. [MIT]
Allegro A cross-platform library mainly aimed for video games and multimedia programming. [zlib]
Axmol Engine 946 about 1 month ago A cross-platform game engine for desktop, mobile, and XBOX (UWP), derived from Cocos2d-x-4.0. [MIT]
Cocos2d-x A multi-platform framework for building 2d games, interactive books, demos and other graphical applications. [MIT]
Corange 1,838 8 months ago A game engine written in pure C, SDL and OpenGL. [BSD]
crown 2,164 about 1 month ago Crown is a general purpose data-driven game engine, written from scratch in orthodox C++ with a minimalistic and data-oriented design philosophy in mind. [MIT]
delta3d A robust simulation platform. [LGPL2]
EnTT 10,370 about 1 month ago Gaming meets modern C++. [MIT]
GamePlay 4,521 11 months ago A cross-platform native C++ game framework for creating 2D/3D mobile and desktop games. [Apache2]
Godot 91,977 about 1 month ago A fully featured, open source, MIT licensed, game engine. [MIT]
Grit 114 over 6 years ago Community project to build a free game engine for implementing open world 3D games. [MIT]
Halley 3,634 about 1 month ago A lightweight game engine written in C++14 with a "true" entity-component system. [Apache 2.0]
JNGL 273 about 1 month ago 2D library for Linux, Windows, macOS, Android, iOS, Xbox, the Nintendo Switch and the Web. [zlib]
KlayGE 2,105 3 months ago a cross-platform open source game engine with plugin-based architecture. [GPLv2]
nCine 1,092 about 1 month ago A cross-platform 2D game engine with an emphasis on performance, written in C++11 and optionally scriptable in Lua. [MIT]
o3de 7,924 about 1 month ago An open-source, real-time, multi-platform 3D engine based on Amazon Lumberyard. [Apache2]
OpenXRay 3,082 about 1 month ago a community-modified X-Ray engine used in S.T.A.L.K.E.R. game series. [Modified BSD/non-commercial only]
Oxygine A cross-platform 2D C++ game engine. [MIT]
Panda3D 4,573 about 1 month ago A game engine, a framework for 3D rendering and game development for Python and C++ programs. [Modified BSD]
PixelGameEngine 3,869 2 months ago The official distribution of olcPixelGameEngine, a tool used in javidx9's YouTube videos and projects. [OLC3]
Polycode 2,382 10 months ago A cross-platform framework for creative code in C++ (with Lua bindings). [MIT]
quakeforge 44 about 1 month ago Actively maintained branch of the original Quake engine code with 20+ years of development. [GPL-2.0]
raylib 23,267 about 1 month ago A simple and easy-to-use library to enjoy videogames programming. [zlib/libpng]
Spring 3,604 10 months ago A powerful free cross-platform RTS game engine. [GPLv2/GPLv3]
Torque2D 1,253 3 months ago An open-source and cross-platform C++ engine built for 2D game development. [MIT]
Torque3D 1,547 about 1 month ago An open-source C++ engine built for 3D game development. [MIT]
toy engine 1,567 over 3 years ago toy is a thin and modular c++ game engine and offers simple expressive c++ idioms to design full featured 2D or 3D games in fast iterations
Urho3D A free lightweight, cross-platform 2D and 3D game engine implemented in C++. Greatly inspired by OGRE and Horde3D. [MIT]
ezEngine 1,439 about 1 month ago Is a free, open-source game engine written in C++. Its philosophy is to be modular and flexible, such that it can be adapted to many different use cases. [MIT]

Awesome C++ / Graph

CXXGraph 485 about 1 month ago free C++(17) graph header-only library for representation and algorithms execution. [AGPL-3.0]
Graaf 187 about 1 month ago A general-purpose lightweight C++20 graph library. [MIT]

Awesome C++ / GUI

Boden 1,688 about 3 years ago Native, mobile, cross-platform GUI Framework. [GPL/LGPL/Proprietary]
CEGUI Flexible, cross-platform GUI library
Elements 3,219 3 months ago Lightweight, fine-grained, resolution independent, modular GUI library. [MIT]
FLTK Fast, light, cross-platform C++ GUI toolkit. [LGPL2]
FOX Toolkit an open-source, cross-platform widget toolkit. [LGPL]
GacUI 2,354 about 1 month ago GPU Accelerated C++ User Interface, with WYSIWYG developing tools, XML supports, built-in data binding and MVVM features. [Ms-PL]
GTK+ A multi-platform toolkit for creating graphical user interfaces. [LGPL]
gtkmm The official C++ interface for the popular GUI library GTK+. [LGPL]
imgui 61,793 about 1 month ago Immediate Mode Graphical User Interface with minimal dependencies. [MIT]
implot 4,885 3 months ago Immediate Mode Plotting widgets for imgui. [MIT]
iup Multi-platform toolkit for building graphical user interfaces. [MIT]
libui 10,745 8 months ago Simple and portable (but not inflexible) GUI library in C that uses the native GUI technologies of each platform it supports. [MIT]
MyGUI 733 2 months ago Fast, flexible and simple GUI. [MIT]
nana Nana is a cross-platform library for GUI programming in modern C++ style. [Boost]
NanoGui 1,592 8 months ago A minimalistic cross-platform widget library for OpenGL 3.x or higher. [BSD]
nuklear 9,406 about 1 month ago A single-header ANSI C gui library. [PublicDomain]
QCustomPlot Qt plotting widget without further dependencies. [GPLv3]
Qwt Qt Widgets for Technical Applications. [Own based on LGPL]
QwtPlot3D A feature-rich Qt/OpenGL-based C++ programming library, providing essentially a bunch of 3D-widgets. [zlib]
RmlUi 2,931 about 1 month ago The HTML/CSS User Interface library evolved. Fork of libRocket. [MIT]
Saucer 307 about 1 month ago A modern, cross-platform C++ webview library. [MIT]
Sciter Sciter is an embeddable HTML/CSS/scripting engine aimed to be used as an UI layer of modern desktop applications. [Free/Commercial]
Slint 17,859 about 1 month ago Lightweight GUI toolkit for desktop and embedded. [GPL/Free/Proprietary]
TGUI 839 about 1 month ago Cross-platform modern c++ GUI. [Zlib]
WebUI 3,137 about 1 month ago Use any web browser as GUI, with your preferred language in the backend and HTML5 in the frontend. [MIT]
wxCharts 133 4 months ago A library to create charts in wxWidgets applications. [MIT]
wxWidgets A C++ library that lets developers create applications for Windows, Mac OS X, Linux and other platforms with a single code base. [Own LGPL]
xtd 814 about 1 month ago Modern C++17/20 framework to create console (CLI), forms (GUI like WinForms) and tunit (unit tests like Microsoft Unit Testing Framework) applications on Windows, macOS, Linux, iOS and android. [MIT]
Yue 3,464 2 months ago A library for creating native cross-platform GUI apps. [LGPLv2]

Awesome C++ / Graphics

assimp 11,088 about 1 month ago Open Asset Import Library (assimp) is a cross-platform 3D model import library which aims to provide a common API for different 3D asset file formats. [BSD-3-Clause]
bgfx 15,197 about 1 month ago A cross-platform rendering library. [BSD]
Blend2D 1,649 about 1 month ago 2D vector graphics engine powered by a JIT compiler. [Zlib]
Cairo A 2D graphics library with support for multiple output devices. [LGPL2 or Mozilla MPL]
C-Turtle 63 about 3 years ago A C++11 header-only turtle graphics library acting as a CImg wrapper. [MIT]
Diligent Engine 3,655 about 1 month ago A modern cross-platform low-level 3D graphics library. [Apache2]
DirectXTK 2,599 about 1 month ago A collection of helper classes for writing DirectX 11.x code in C++. [MIT]
GLFW 13,201 about 2 months ago A simple, cross-platform OpenGL wrangling library. [zlib/libpng]
GLFWPP 98 almost 2 years ago A thin modern C++17 header-only wrapper for GLFW. [MIT]
Harfang 3D 586 over 1 year ago 3D visualization library usable in C++, Python, Lua and Go. Based on BGFX. [GPLv3/LGPLv3/Proprietary]
herebedragons 1,733 10 months ago A basic 3D scene implemented with various engines, frameworks or APIs. [MIT]
Horde3D 1,551 4 months ago A small 3D rendering and animation engine. [EPL]
Ion 1,427 over 2 years ago A small and efficient set of libraries for building cross-platform client or server applications that use 3D graphics. [Apache2]
Irrlicht A high performance realtime 3D engine written in C++. [zlib]
libigl 4,617 about 1 month ago Simple C++ geometry processing library. [MPL2]
LLGL 2,113 about 1 month ago Low Level Graphics Library (LLGL) is a thin abstraction layer for the modern graphics APIs. [BSD-3-Clause]
LunaSVG 921 about 1 month ago a standalone SVG rendering library in C++. [MIT]
magnum 4,831 about 2 months ago Lightweight and modular C++11/C++14 graphics middleware for games and data visualization. [MIT]
micro-gl 280 4 months ago Realtime, Embeddable, Headers Only C++11 CPU vector graphics. no STD lib, no FPU and no GPU required. [CUSTOM]
NanoVG 5,214 10 months ago Antialiased 2D vector drawing library on top of OpenGL for UI and visualizations. [Zlib]
Ogre 3D A scene-oriented, real-time, flexible 3D rendering engine (as opposed to a game engine) written in C++. [MIT]
OpenSceneGraph An open source high performance 3D graphics toolkit. [OSGPL]
OpenSubdiv 2,905 about 1 month ago Pixar's library for evaluating and rendering subdivision surfaces on CPU and GPU. [Modified Apache2]
OpenVDB Library and tools for storing, editing, and rendering volumetric datasets. [MPL2]
Panda3D A framework for 3D rendering and game development for Python and C++. [BSD]
Partio 463 11 months ago Library for wrangling particle data, with support for most common file formats. [Modified BSD]
Skia 9,364 about 1 month ago A complete 2D graphic library for drawing Text, Geometries, and Images. [BSD]
ThorVG 792 about 1 month ago a platform-independent portable library that allows for drawing vector-based scenes and animations, including SVG and Lottie. [MIT]
TinySpline 1,219 5 months ago A small, yet powerful ANSI C library for interpolating, transforming, and querying arbitrary NURBS, B-Splines, and Bézier curves. [MIT]
urho3d 4,569 almost 2 years ago Cross-platform rendering and game engine. [Many different, mostly MIT]
Yocto/GL 2,835 11 months ago Tiny C++ Libraries for Data-Driven Physically-based Graphics. [MIT]

Awesome C++ / Image Processing

Boost.GIL 178 about 1 month ago Generic Image Library. [Boost]
BitmapPlusPLus 36 about 1 month ago Simple and Fast header only Bitmap C++ library. [MIT]
CImg A small, open source, C++ toolkit for image processing. [Own LGPL or GPL]
CxImage An image processing and conversion library to load, save, display, transform BMP, JPEG, GIF, PNG, TIFF, MNG, ICO, PCX, TGA, WMF, WBMP, JBG, J2K images. [zlib]
Dlib 13,623 2 months ago A modern C++11 machine learning, computer vision, numerical optimization, and deep learning toolkit. [Boost]
fpng 891 5 months ago Super fast C++ .PNG writer/reader. [Unlicense]
FreeImage An open source library that supports popular graphics image formats and others as needed by today's multimedia applications. [GPL2 or GPL3]
GD 906 3 months ago GD Graphics Library, famously used in PHP for image loading/manipulation & thumbnail generation. [custom permissive license, requires mention in user docs]
DCMTK DICOM Toolkit
GDCM Grassroots DICOM library
ITK An open-source, cross-platform system for image analysis. [Apache2 from ITK 4.0]
https://github.com/google/jpegli] [Jpegli][ - an improved JPEG encoder and decoder implementation. [BSD-3-Clause]
Leptonica 1,821 about 2 months ago Leptonica is an open source library containing software that is broadly useful for image processing and image analysis applications. [BSD-2-Clause]
libavif 1,589 about 1 month ago Library for encoding and decoding .avif files. [BSD-2-Clause]
libfacedetection 12,351 3 months ago Open source library for face detection in images. The face detection speed can reach 1500FPS. [BSD]
libjpeg-turbo 3,816 about 1 month ago A JPEG image codec that uses SIMD instructions to accelerate baseline JPEG encoding and decoding. [IJG & BSD-3-Clause & zlib]
libjxl 2,742 about 1 month ago JPEG XL image format reference implementation. [BSD-3-Clause]
libpng 1,315 3 months ago the reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. [libpng-2.0]
libspng 749 7 months ago Simple, modern libpng alternative. [BSD-2]
libvips 53 over 3 years ago A fast image processing library with low memory needs. [LGPL]
LodePNG 2,120 about 1 month ago PNG encoder and decoder in C and C++. [Zlib]
Magick++ ImageMagick program interfaces for C++. [Apache2]
MagickWnd ImageMagick program interfaces for C. [Apache2]
MozJPEG 5,484 6 months ago Improved JPEG encoder. [BSD/BSD-3-Clause/ZLIB]
OpenCV Open source computer vision. [Apache2]
OpenEXR Cross-platform library for high dynamic range imaging. [Modified BSDF]
OpenImageIO 1,992 about 1 month ago Powerful image and texture wrangling library with support for a wide number of common lossy and RAW formats. [Modified BSD]
OpenJPEG 985 about 1 month ago an open-source JPEG 2000 codec written in C language. [BSD-2-Clause]
QOI 6,994 3 months ago The “Quite OK Image Format” for fast, lossless image compression. [MIT]
SAIL 311 3 months ago Easy-to-use cross-platform image decoding library with pluggable image codecs. [MIT]
Simd 2,077 about 1 month ago C++ image processing library with using of SIMD: SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, VMX(Altivec) and VSX(Power7), NEON for ARM. [MIT]
stb-image 27,210 2 months ago STB single-header image loading library. [Public Domain]
tesseract-ocr An OCR engine. [Apache2]
TinyDNG 156 2 months ago Header-only Tiny DNG/TIFF loader and writer in C++. [MIT]
TinyEXIF 114 over 1 year ago Tiny ISO-compliant C++ EXIF and XMP parsing library for JPEG. [MIT]
TinyTIFF 144 8 months ago lightweight TIFF reader/writer library. [GPL-3.0]
Video++ 721 almost 6 years ago A C++14 high performance video and image processing library. [MIT]
VIGRA 412 4 months ago A generic C++ computer vision library for image analysis. [MIT X11]
VTK Open-source, freely available software system for 3D computer graphics, image processing and visualization. [BSD]

Awesome C++ / Internationalization

gettext GNU 'gettext'. [GPL2]
IBM ICU A set of C/C++ and Java libraries providing Unicode and Globalization support. [ICU]
libiconv An encoding conversion library between different character encodings. [GPL]
simdutf 1,220 about 1 month ago Unicode routines (UTF8, UTF16, UTF32): billions of characters per second using SSE2, AVX2, NEON, AVX-512. [Apache-2/MIT]
uni-algo 285 about 1 year ago Unicode Algorithms Implementation for C/C++. [Unlicense or MIT]
utf8.h 1,758 3 months ago Single header utf8 string functions for C and C++. [Unlicense]
utf8proc 1,069 5 months ago A clean C library for processing UTF-8 Unicode data. [MIT]

Awesome C++ / Inter-process communication

Apache Thrift Efficient cross-language IPC/RPC, works between C++, Java, Python, PHP, C#, and many more other languages. Originally developed by Facebook. [Apache2]
Boost.Interprocess 139 about 1 month ago Header-only Boost library that supports kernel-level shared memory and memory-mapped files, with in-built synchronization mechanisms (semaphores, mutexes, and more). [Boost]
bRPC 16,597 about 1 month ago bRPC is an Industrial-grade RPC framework using C++ Language, which is often used in high performance system such as Search, Storage, Machine learning, Advertisement, Recommendation etc. [Apache2]
Cap'n Proto 11,788 about 1 month ago Fast data interchange format and capability-based RPC system. [MIT]
eCAL 11 over 2 years ago Pub/sub, client/server, C++/Python/C#, various message protocols (protobuf, capnproto ..). [Apache2]
gRPC 42,124 about 1 month ago A high performance, open source, general-purpose RPC framework. [BSD]
Ice 2,060 about 1 month ago Comprehensive RPC framework with support for C++, C#, Java, JavaScript, Python and more. [GPLv2]
iceoryx 1,713 about 1 month ago True zero-copy inter-process communication framework for safety critical systems with bindings for C, Rust. Runs on Linux, QNX, Windows, Mac OS, FreeBSD. [Apache2]
libjson-rpc-cpp 956 about 1 year ago JSON-RPC framework for C++ servers and clients. [MIT]
nanomsg 6,014 12 months ago A simple high-performance implementation of several "scalability protocols". [MIT]
nng 3,884 about 1 month ago nanomsg-next-generation, a light-weight brokerless messaging library. [MIT]
rpclib 1,728 9 months ago A modern C++ msgpack-RPC server and client library. [MIT]
simple-rpc-cpp 37 over 9 years ago A simple RPC wrapper generator to C/C++ functions. [BSD]
SRPC 1,969 about 1 month ago A lightweight RPC system that supports multiple protocols and OpenTelemetry. [Apache2]
WAMP Provides RPC and pub/sub messaging patterns. (various implementations, various languages)
xmlrpc-c A lightweight RPC library based on XML and HTTP. [BSD]

Awesome C++ / JSON

Boost.PropertyTree 55 about 1 month ago A property tree parser/generator that can be used to parse XML/JSON/INI/Info files. [Boost]
cJSON 10,938 4 months ago Ultralightweight JSON parser in ANSI C. [MIT]
DAW JSON Link 479 2 months ago Fast, convenient JSON serialization and parsing in C++. [BSL-1.0]
frozen 709 about 1 year ago JSON parser and generator for C/C++. [GPL & GPL2]
Glaze 1,414 about 1 month ago Extremely fast, in memory, JSON and interface library for modern C++. [MIT]
Jansson 3,100 5 months ago C library for encoding, decoding and manipulating JSON data. [MIT]
jbson 38 about 9 years ago jbson is a library for building & iterating BSON data, and JSON documents in C++14. [Boost]
JeayeSON 132 about 8 years ago A very sane (header only) C++ JSON library. [BSD]
Jsmn 3,726 7 months ago A minimalistic JSON parser in C. [MIT]
json 43,665 about 1 month ago JSON for Modern C++. [MIT]
JSON++ 540 almost 4 years ago A JSON parser in C++. [MIT]
json.cpp 664 about 1 month ago a baroque JSON parsing / serialization library for C++. [Apache-2.0]
json.h 719 6 months ago A simple one header/one source solution to parsing JSON in C and C++. [Unlicense]
json-build 38 about 1 month ago C89 tiny zero-allocation JSON serializer. [MIT]
json-c 2,997 about 1 month ago A JSON implementation in C. [MIT]
jsoncons 730 about 1 month ago A C++ header-only library for JSON and JSON-like binary formats with JSONPointer, JSONPatch, JSONPath and JMESPath. [Boost]
JsonCpp 8,223 about 1 month ago A C++ library for interacting with JSON. [MIT]
Jsonifier 60 about 1 month ago A few classes for parsing and serializing objects from/into JSON - very rapidly. [MIT]
jsonParse 11 over 5 years ago A simple JSON parser in ANSI C. [MIT]
json-parser 1,286 9 months ago Very low footprint JSON parser written in portable ANSI C. [BSD]
json11 2,555 almost 5 years ago A tiny JSON library for C++11. [MIT]
json-struct 427 4 months ago High performance, single header JSON parser parsing to and from C++ structs. [MIT]
json-voorhees 129 6 months ago JSON library for C++. Support for C++11. No dependencies, fast and dev-friendly. [Apache2]
JSON Toolkit 43 about 1 month ago JSON, JSON Pointer, JSON Schema, and JSONL library for C++20. [AGPL/Commercial]
jute 72 over 3 years ago Very simple C++ JSON Parser. [PublicDomain]
libjson 282 8 months ago A JSON parser and printer library in C. easy to integrate with any model. [LGPL]
libjson Lightweight JSON library. [?]
LIBUCL 1,635 9 months ago Universal configuration library parser. [BSD-2-Clause]
parson 1,367 8 months ago Parson is a lighweight json library written in C. [MIT]
PicoJSON 1,119 6 months ago A header-file-only, JSON parser serializer in C++. [BSD]
qt-json 330 almost 7 years ago A simple class for parsing JSON data into a QVariant hierarchy and vice versa. [GPLv3]
QJson 288 over 1 year ago A qt-based library that maps JSON data to QVariant objects. [LGPL2]
RapidJSON 14,426 about 1 month ago A fast JSON parser/generator for C++ with both SAX/DOM style API. [MIT]
sajson 568 over 3 years ago Lightweight, extremely high-performance JSON parser for C++11. [MIT]
simdjson 19,455 about 1 month ago Extremely fast JSON library that can parse gigabytes of JSON per second. [Apache-2.0]
Sonic-Cpp 861 2 months ago A fast JSON serializing & deserializing library, accelerated by SIMD. [Apache-2.0]
taoJSON 605 about 2 months ago Zero-dependency C++ header-only JSON library. [MIT]
ujson µjson is a a small, C++11, UTF-8, JSON library. [MIT]
UltraJSON 4,348 about 1 month ago Ultra fast JSON decoder and encoder written in C. [BSD-3-Clause]
YAJL 2,156 10 months ago A fast streaming JSON parsing library in C. [ISC]
yyjson 3,164 about 1 month ago A high performance JSON library written in ANSI C. [MIT]

Awesome C++ / Logging

Blackhole 201 about 6 years ago Attribute-based logging framework, which is designed to be fast, modular and highly customizable. [MIT]
Boost.Log 183 about 1 month ago Designed to be very modular and extensible. [Boost]
BqLog 257 about 1 month ago A lightweight, high-performance logging system used in projects such as "Honor of Kings". [Apache-2.0]
Easylogging++ 3,813 9 months ago Extremely light-weight high performance logging library for C++11 (or higher) applications. [MIT]
fmtlog 814 5 months ago A performant fmtlib-style logging library with latency in nanoseconds. [MIT]
G3log 910 5 months ago Asynchronous logger with Dynamic Sinks. [PublicDomain]
glog 7,136 2 months ago C++ implementation of the Google logging module
haclog 73 4 months ago An extremely fast plain C logging library. [MIT]
Log4cpp A library of C++ classes for flexible logging to files, syslog, IDSA and other destinations. [LGPL]
log4cplus 1,656 about 2 months ago A simple to use C++ logging API providing thread-safe, flexible, and arbitrarily granular control over log management and configuration. [BSD & Apache2]
loguru 1,797 7 months ago A lightweight C++ logging library. [PublicDomain]
lwlog 230 about 2 months ago Very fast synchronous and asynchronous C++17 logging library. [MIT]
plog 2,242 about 1 month ago Portable and simple log for C++ in less than 1000 lines of code. [MPL2]
reckless 491 about 1 year ago Low-latency, high-throughput, asynchronous logging library for C++. [MIT]
spdlog 24,698 about 1 month ago Super fast, header only, C++ logging library
templog A very small and lightweight C++ library which you can use to add logging to your C++ applications. [Boost]
P7Baical An open source and cross-platform library for high-speed sending telemetry & trace data with minimal usage of CPU and memory. [LGPL]
Quill 1,775 about 1 month ago Asynchronous cross platform low latency logging library. [MIT]

Awesome C++ / Machine Learning

Caffe 34,149 6 months ago A fast framework for neural networks. [BSD]
catboost 8,139 about 1 month ago A fast, scalable, high performance Gradient Boosting on Decision Trees library. [Apache2]
CCV 7,102 about 1 month ago C-based/Cached/Core Computer Vision Library, A Modern Computer Vision Library. [BSD]
darknet 25,894 9 months ago Open source neural network framework written in C and CUDA. [PublicDomain]
Dlib 13,623 2 months ago A modern C++11 machine learning, computer vision, numerical optimization, and deep learning toolkit. [Boost]
FAISS 31,920 about 1 month ago A library for efficient similarity search and clustering of dense vectors. [MIT]
Fido 442 about 5 years ago A highly-modular C++ machine learning library for embedded electronics and robotics. [MIT]
flashlight 5,300 about 2 months ago A fast, flexible machine learning library from Facebook AI Research written entirely in C++ and based on the ArrayFire tensor library. [BSD-3-Clause]
ggml 11,362 about 1 month ago Tensor library for machine learning with 16-bit and 4-bit quantization support. [MIT]
libsvm 4,586 5 months ago A simple, easy-to-use, efficient library for Support Vector Machines. [BSD-3-Clause]
m2cgen 2,826 6 months ago A CLI tool to transpile trained classic ML models into a native C code with zero dependencies. [MIT]
MeTA 698 almost 2 years ago A modern C++ data sciences toolkit. [MIT]
Minerva 701 about 6 years ago A fast and flexible system for deep learning. [Apache2]
mlpack 5,151 about 1 month ago A scalable c++ machine learning library. [LGPLv3]
ncnn 20,655 about 1 month ago A high-performance neural network inference computing framework optimized for mobile platforms. [BSD]
OpenCV 79,662 about 1 month ago Open Source Computer Vision Library. [BSD]
oneDAL 619 about 1 month ago A powerful machine learning library that helps speed up big data analysis. [Apache]
ONNX runtime 14,990 about 1 month ago C and C++ library for training and inference ONNX models. ONNX is a standard that AI models can be converted into, regardless of the library they are trained with. [MIT]
Recommender 266 over 2 years ago C library for product recommendations/suggestions using collaborative filtering (CF). [BSD]
RNNLIB 900 almost 5 years ago RNNLIB is a recurrent neural network library for sequence learning problems. [GPLv3]
SHOGUN 3,032 about 1 year ago The Shogun Machine Learning Toolbox. [GPLv3]
sofia-ml The suite of fast incremental algorithms for machine learning. [Apache2]
USearch 2,311 about 1 month ago Fast search and clustering library for vectors and strings. [Apache2]
VLFeat 1,605 over 2 years ago The VLFeat open source library implements popular computer vision algorithms specialising in image understanding and local featurexs extraction and matching. [BSD-2-Clause]
xgboost 26,396 about 1 month ago Scalable, Portable and Distributed Gradient Boosting (GBDT, GBRT or GBM) Library, for Python, R, Java, Scala, C++ and more. Runs on single machine, Hadoop, Spark, Flink and DataFlow. [Apache2]

Awesome C++ / Math

Apophenia 200 about 5 years ago A C library for statistical and scientific computing. [GPL2]
Armadillo Fast C++ library for linear algebra & scientific computing. [Apache2]
autodiff 1,682 2 months ago A modern, fast and expressive C++ library for automatic differentiation. [MIT]
blaze high-performance C++ math library for dense and sparse arithmetic. [BSD]
Boost.Multiprecision 202 about 1 month ago provides higher-range/precision integer, rational and floating-point types in C++, header-only or with GMP/MPFR/LibTomMath backends. [Boost]
ceres-solver C++ library for modeling and solving large complicated nonlinear least squares problems from google. [BSD]
CGAL 5,058 about 1 month ago Collection of efficient and reliable geometric algorithms. [LGPL&GPL]
cml free C++ math library for games and graphics. [Boost]
CNL 645 9 months ago A Compositional Numeric Library for C++. [Boost]
DirectXMath 1,564 about 1 month ago An all inline SIMD C++ linear algebra library for use in games and graphics apps
Dlib 13,623 2 months ago A modern C++11 machine learning, computer vision, numerical optimization, and deep learning toolkit. [Boost]
Eigen A high-level C++ library of template headers for linear algebra, matrix and vector operations, numerical solvers and related algorithms. [MPL2]
ExprTk The C++ Mathematical Expression Toolkit Library (ExprTk) is a simple to use, easy to integrate and extremely efficient run-time mathematical expression parser and evaluation engine. [MIT]
Geometric Tools C++ library for computing in the fields of mathematics, graphics, image analysis and physics. [Boost]
GLM 9,418 5 months ago Header-only C++ math library that matches and inter-operates with OpenGL's GLSL math. [MIT]
GMTL Graphics Math Template Library is a collection of tools implementing Graphics primitives in generalized ways. [GPL2]
GMP A C library for arbitrary precision arithmetic, operating on signed integers, rational numbers, and floating-point numbers. [LGPL3 & GPL2]
Klein 763 6 months ago A fast, SIMD-optimized C++17 Geometric Algebra library for point, line, and plane projections, intersections, joins, rigid-body motion, and more. [MIT]
linalg.h 875 over 1 year ago Single header, public domain, short vector math library for C++. [Unlicense]
MatX 1,229 about 1 month ago A GPU-accelerated C++17 numerical computing library with a MATLAB/Python-like syntax. [BSD 3-clause]
MIRACL 655 over 3 years ago A Multiprecision Integer and Rational Arithmetic Cryptographic Library. [AGPL]
NumCpp 3,608 4 months ago A templatized header only C++ implementation of the Python Numpy library. [MIT]
muparser muParser is an extensible high performance math expression parser library written in C++. [MIT]
LibTomMath 659 about 2 months ago A free open source portable number theoretic multiple-precision integer library written entirely in C. [PublicDomain & WTFPL]
linmath.h 932 over 1 year ago A lean linear math library, aimed at graphics programming. [WTFPL]
lp_solve A library used to formulate and solve linear programming problems. [LGPL]
OpenBLAS 6,453 about 1 month ago An optimized BLAS library based on GotoBLAS2 1.13 BSD version. [BSD 3-clause]
PCG-rand PCG is a family of simple fast space-efficient statistically good algorithms for random number generation. Unlike many general-purpose RNGs, they are also hard to predict. [Apache]
QuantLib 5,480 about 1 month ago A free/open-source library for quantitative finance. [Modified BSD]
SimSIMD 1,141 about 2 months ago Vector distance functions for x86 AVX2, AVX-512, Arm NEON, and SVE. [Apache2]
StatsLib 533 over 1 year ago A C++ header-only library of statistical distribution functions. [Apache2]
SymEngine 1,184 about 1 month ago Fast symbolic manipulation library, a rewriting of SymPy's core in C++. [MIT]
TinyExpr 1,619 5 months ago A C library for parsing and evaluating math expressions from strings. [zlib]
Vc 1,461 8 months ago SIMD Vector Classes for C++. [BSD]
Versor A (fast) Generic C++ library for Geometric Algebras, including Euclidean, Projective, Conformal, Spacetime (etc)
Wagyu 166 11 months ago A general library for geometry operations of union, intersections, difference, and xor. [mapbox-wagyu original]
Wykobi A C++ library of efficient, robust and simple to use C++ 2D/3D oriented computational geometry routines. [MIT]
xtensor 3,388 about 2 months ago A C++14 library for numerical analysis with multi-dimensional array expressions, inspired by NumPy syntax. [BSD 3-clause]
universal 424 about 2 months ago A C++14 header-only library implementing arbitrary posit arithmetic. The posit number system is a tapered floating point that is more efficient than IEEE floating point. Posits enable reproducible computational science. [MIT license]
XAD 337 about 1 month ago Powerful Automatic Differentiation for C++. [AGPL]

Awesome C++ / Memory Allocation

Boehm GC 3,024 about 1 month ago Conservative garbage collector for C and C++. [similar to X11]
C Smart Pointers 1,608 about 2 years ago Smart pointers for the (GNU) C programming language. [MIT]
Hoard 1,115 6 months ago Fast, Scalable, and Memory-efficient Malloc for Linux, Windows, and Mac. [Apache-2.0]
jemalloc 9,628 about 1 month ago General purpose malloc(3) implementation that emphasizes fragmentation avoidance and scalable concurrency support. [BSD]
memory 1,499 6 months ago STL compatible C++ memory allocator library. [ZLib]
memory-allocators 1,769 8 months ago Custom memory allocators to improve the performance of dynamic memory allocation. [MIT]
mimalloc 10,694 about 1 month ago A compact general purpose allocator with excellent performance. [MIT]
rpmalloc 2,186 7 months ago Cross platform lock free thread caching 16-byte aligned memory allocator implemented in C. [PublicDomain]
snmalloc 1,585 about 1 month ago Message passing based high-performance allocator. [MIT]
TCMalloc 4,450 about 1 month ago Google's fast, multi-threaded malloc implementation. [Apache-2.0]
buddy_alloc 155 about 1 month ago A single header buddy memory allocator for C with bounded allocation costs. [0BSD]
tgc 972 over 1 year ago A tiny garbage collector for C written in ~500 LOC. [BSD]

Awesome C++ / Multimedia

GStreamer A library for constructing graphs of media-handling components. [LGPL]
libass 951 about 1 month ago Portable subtitle renderer for the ASS/SSA subtitle format. [ISC]
libav 1,086 over 3 years ago A collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata. [LGPL v2.1+ and others]
LIVE555 Streaming Media Multimedia streaming library using open standard protocols (RTP/RTCP, RTSP, SIP). [LGPL]
libVLC libVLC (VLC SDK) media framework. [GPL]
MediaInfoLib 642 about 1 month ago Convenient unified display of the most relevant technical and tag data for video and audio files. [BSD]
QtAv 4,001 over 1 year ago A multimedia playback framework based on Qt and FFmpeg to write a player easily. [LGPL]
SDL 10,516 about 1 month ago Simple DirectMedia Layer. [zlib]
SFML 10,340 about 1 month ago Simple and Fast Multimedia Library. [zlib]
TagLib 1,196 about 2 months ago A library for reading and editing the metadata of several popular audio formats. [LGPL/MPL]

Awesome C++ / Networking

ada 1,396 about 1 month ago WHATWG-compliant and fast URL parser written in modern C++. [Apache-2.0/MIT]
ACE An OO Network Programming Toolkit in C++. [?MIT?]
Boost.Asio 1,260 about 1 month ago A cross-platform C++ library for network and low-level I/O programming. [Boost]
Boost.Beast 4,392 about 1 month ago HTTP and WebSocket built on Boost.Asio in C++11. [Boost]
Breep 141 about 6 years ago Event based, high-level C++14 peer-to-peer library. [EUPL-1.1 (OSI approved)]
C++ REST SDK 8,041 about 2 months ago C++ REST SDK (previously named Casablanca). [Apache2]
Restbed 1,932 4 months ago C++11 Asynchronous RESTful framework. [AGPL]
Restinio 1,169 about 2 months ago A header-only C++14 library that gives you an embedded HTTP/Websocket server. [BSD]
c-ares 1,886 about 1 month ago A C library for asynchronous DNS requests. [MIT]
cpp-httplib 13,307 about 1 month ago A single file C++11 header-only HTTP/HTTPS server library. [MIT]
cpp-netlib A collection of open-source libraries for high level network programming. [Boost]
cpp-netlib/uri 140 almost 5 years ago URI parser/builder library for C++, compatible with RFC 3986 and RFC 3987. [Boost]
CppServer 1,446 10 months ago Ultra fast and low latency asynchronous socket server & client C++ library with support TCP, SSL, UDP, HTTP, HTTPS, WebSocket protocols and 10K connections problem solution. [MIT]
cpr 6,633 about 1 month ago A modern C++ HTTP requests library with a simple but powerful interface. Modeled after the Python Requests module. [MIT]
curlcpp 634 over 1 year ago An object oriented C++ wrapper for CURL(libcurl). [MIT]
curlpp 1,689 8 months ago -C++ wrapper around libcURL. [MIT]
DPDK 3,439 about 1 month ago Data Plane Development Kit, libraries and drivers for fast packet processing. [BSD-3-Clause & GPL-2.0]
Dyad.c 1,442 over 4 years ago Asynchronous networking for C. [MIT]
ENet 2,788 2 months ago Reliable UDP networking library. [MIT]
evpp 3,616 9 months ago C++ high performance networking with TCP/UDP/HTTP protocols. [BSD]
FTP client for C++ 215 almost 2 years ago C++ client for making FTP requests. [MIT]
H2O 10,940 about 1 month ago An optimized HTTP server with support for HTTP/1.x and HTTP/2. It can also be used as a library. [MIT]
HTTP Parser 6,361 over 2 years ago A http request/response parser for C. [MIT]
KCP 15,484 about 2 months ago A fast and reliable ARQ protocol that helps applications to reduce network latency. [MIT]
libcurl Multiprotocol file transfer library. [MIT/X derivate license]
libhttpserver 899 7 months ago C++ library for creating an embedded Rest HTTP server (and more). [LGPL2.1]
Libmicrohttpd GNU libmicrohttpd is a small C library that is supposed to make it easy to run an HTTP server as part of another application. [LGPL v2.1+]
libpcap 2,733 about 1 month ago A portable C/C++ library for network traffic capture. [BSD]
libquic 1,786 over 2 years ago A QUIC protocol library extracted from Chromium's QUIC Implementation. [BSD]
librdkafka 332 about 1 month ago Apache Kafka client library for C and C++. [BSD-2-Clause]
libwebsockets 4,820 about 1 month ago A lightweight pure C WebSocket implementation that provides both client and server libraries. [LGPL2.1 + static link exception]
Lithium Build high performance C++ HTTP servers without being a C++ expert. [MIT]
lwIP A lightweight TCP/IP stack. [Modified BSD]
mailio 392 about 2 months ago mailio is a cross platform C++ library for MIME format and SMTP, POP3 and IMAP protocols. [BSD]
Mongoose 11,234 about 1 month ago Extremely lightweight webserver. [GPL2]
MQTT-C 789 8 months ago A portable MQTT C client for embedded systems and PCs alike. [MIT]
mTCP 2,015 7 months ago Highly scalable user-level TCP stack for multicore systems. [Modified BSD]
Muduo 14,935 5 months ago A C++ non-blocking network library for multi-threaded server in Linux. [BSD]
nghttp2 4,663 about 1 month ago HTTP/2 C Library. [MIT]
nghttp3 873 about 2 months ago HTTP/3 library written in C. [MIT]
Onion 2,028 over 2 years ago HTTP server library in C designed to be lightweight and easy to use. [Apache2/GPL2]
PF_RING™ 2,718 about 1 month ago High-speed packet processing framework. [LGPL-2.1]
PicoHTTPParser 1,859 7 months ago A tiny, primitive, fast HTTP request/response parser. [MIT]
POCO C++ class libraries and frameworks for building network- and internet-based applications that run on desktop, server, mobile and embedded systems. [Boost]
Proxygen 8,168 about 1 month ago Facebook's collection of C++ HTTP libraries including an easy to use HTTP server. [BSD]
RedPanda 9,780 about 1 month ago Streaming data platform for developers. Kafka API compatible. 10x faster. [BSL]
RakNet 3,323 about 3 years ago A cross platform, open source, C++ networking engine for game programmers. [BSD]
restclient-cpp 1,576 about 1 year ago Simple REST client for C++. It wraps libcurl for HTTP requests. [MIT]
Seasocks 740 4 months ago Simple, small, C++ embeddable webserver with WebSockets support. [BSD]
tlse 578 about 1 month ago Single C file TLS 1.2/1.3 implementation, using tomcrypt as crypto library [BSD-2-Clause]
TQUIC 1,148 2 months ago A high-performance, lightweight, and cross-platform QUIC library, exposed to C and C++. [Apache2]
Tufão 591 almost 3 years ago An asynchronous web framework for C++ built on top of Qt. [LGPL2]
uriparser 339 about 1 month ago Strictly RFC 3986 compliant URI parsing and handling library. [BSD-3-Clause]
uWebSockets 17,520 about 1 month ago µWS is one of the most lightweight, efficient & scalable WebSocket & HTTP server implementations available. [Zlib]
UCall 1,154 4 months ago A high-performance SIMD-accelerated RPC library on io_uring. [Apache2]
WAFer 694 about 7 years ago A C language-based ultra-light software platform for scalable server-side and networking applications. Think node.js for C programmers. [GPL2]
Wangle 3,059 about 1 month ago A client/server application framework to build asynchronous, event-driven modern C++ services. [Apache-2.0]
wdt 2,877 about 1 month ago An embeddedable library (and command line tool) aiming to transfer data between 2 systems as fast as possible over multiple TCP paths. [BSD-3-Clause]
WebSocket++ 7,127 5 months ago C++/Boost Asio based websocket client/server library. [BSD]
PcapPlusPlus 2,761 about 1 month ago a multiplatform C++ network sniffing and packet parsing and crafting framework. [Unlicense]
ZeroMQ 9,817 about 2 months ago High-speed, modular asynchronous communication library. [LGPL3/MPL2]

Awesome C++ / Office Open XML

DuckX 430 7 months ago C++ library for creating and modifying Microsoft Word (.docx) files. [MIT]
FreeXL an open source library to extract valid data from within Spreadsheets. [MPL/GPL-2/LGPL-2]
libxls 444 about 1 month ago Read binary Excel files from C/C++ [BSD-2-Clause]
libxlsxwriter 1,538 about 1 month ago A C library for creating Excel XLSX files. [BSD-2-Clause]
OpenXLSX 1,405 about 1 month ago A C++ library for reading, writing, creating and modifying Microsoft Excel® (.xlsx) files. [BSD-3-Clause]
SimpleXlsxWriter XLSX files writer for Microsoft Excel 2007 and above. [zlib]
XLSX I/O 438 6 months ago C library for reading and writing .xlsx files. [MIT]

Awesome C++ / PDF

libharu 1,788 5 months ago A free, cross platform, open-sourced software library for generating PDF. [zlib]
litePDF Library to create and edit PDF documents that uses GDI functions through a device context to draw the page content. [LGPL v3 and zlib]
MuPDF A lightweight PDF, XPS, and E-book viewer. [AGPL/Proprietary]
PDF-Writer 909 about 1 month ago High performance library for creating, modiyfing and parsing PDF files in C++ [Apache-2.0]
pdfio 204 about 1 month ago A simple C library for reading and writing PDF files. [Apache-2]
PDFium PDF generation and rendering library. [BSD-3-Clause]
PoDoFo A library to work with the PDF file format. [LGPL]
Poppler Open-source multi-backend PDF rendering library based on the xpdf-3.0 code base. [GPLv2/GPLv3]
Xpdf Xpdf is a free PDF viewer and toolkit, including a text extractor, image converter, HTML converter, and more. [GPL v2/GPL v3]
DynaPDF An easy-to-use PDF generation library. [Commercial]

Awesome C++ / Physics

Box2D 8,402 about 1 month ago A 2D physics engine for games. [BSD-like]
Bullet 12,777 5 months ago A 3D physics engine for games. [zlib]
Chipmunk 2,227 9 months ago A fast and lightweight 2D game physics library. [MIT]
Jolt Physics 6,950 about 1 month ago A multi core friendly rigid body physics and collision detection library. [MIT]
Kratos 1,054 about 1 month ago framework for building parallel, multi-disciplinary simulation software, aiming at modularity, extensibility, and high performance. [BSD]
LiquidFun 4,739 over 1 year ago A 2D physics engine for games. [BSD-like]
Newton Dynamics 954 2 months ago An integrated solution for real time simulation of physics environments. [zlib]
ODE Open Dynamics Engine - An open source, high performance library for simulating rigid body dynamics. [BSD&LGPL]
ofxBox2d 321 over 1 year ago openFrameworks wrapper for Box2D. [BSD-like]
PhysX 2,353 about 2 years ago An open-source realtime physics engine middleware SDK developed by Nvidia as a part of Nvidia GameWorks software suite. [BSD-3-Clause]
PlayRho 133 9 months ago An interactive physics engine & library. [Zlib]
Project Chrono 2,266 about 1 month ago An open source multi-physics simulation engine. [BSD-3-Clause]
Quantum++ 549 about 1 month ago A modern C++11 quantum computing library. [MIT]
QuarkPhysics 198 about 2 months ago A 2D Soft Body and Rigid Body Physics Engine. [MIT]
Simbody 2,344 about 1 month ago High-performance C++ multibody dynamics/physics library for simulating articulated biomechanical and mechanical systems like vehicles, robots, and the human skeleton. [Apache2]
SOFA 941 about 1 month ago SOFA is an open-source framework targeting at real-time simulation, with an emphasis on medical simulation. [LGPL]

Awesome C++ / Reflection

config-loader 222 over 1 year ago A C++17 static reflection framework, from parse configuration file to native data structure. [MIT]
Better Enums 1,687 11 months ago Reflective enums (to string, iteration). Single header. [BSD]
clReflect 276 over 1 year ago C++ Reflection using clang. [MIT]
CPFG 220 over 2 years ago A C++03 library for reflection, callback and script binding. [Apache2]
CPP-Reflection 671 about 5 years ago C++ Reflection using clang. [MIT]
Easy Reflection 99 about 1 year ago Easy and fast reflection + serialization solution like in Rust, Java or Go. [Apache]
Magic Enum 5,042 about 2 months ago Header-only C++17 library provides static reflection for enums (to string, from string, iteration), work with any enum type without any macro or boilerplate code. [MIT]
magic_get 207 about 1 year ago std::tuple like methods for user defined types without any macro or boilerplate code. [Boost]
meta 599 over 4 years ago Header-only, non-intrusive and macro-free runtime reflection system in C++. [MIT]
Nameof 2,106 3 months ago Header-only C++17 library provides nameof macros and functions to obtain the simple name of variable, type, function, macro, and enum. [MIT]
Ponder 649 about 2 years ago A C++11 library for reflection. [MIT]
REFLECT 330 3 months ago C++20 Static Reflection library. [MIT]
reflect-cpp 1,165 about 1 month ago Serialization through reflection, including automatic field name retrieval from structs. [MIT]
RTTR 3,208 9 months ago A C++11 library for reflection. [MIT]
simple_enum 22 about 2 months ago An Fast, Intuitive and Type-Safe C++ Enumeration Support Library. [BSL-1.0]
TSMP 97 8 months ago An intrusion and macro-free C++20 library for static reflection. It uses libclang to extract reflection data from your source code and makes it usable via template specialization. [MIT]
visit_struct 506 almost 2 years ago A miniature library for struct-field reflection in C++. [Boost]
Refureku 227 5 months ago A C++17 runtime reflection and code generation library. [MIT]

Awesome C++ / Regular Expression

CppVerbalExpressions 382 over 5 years ago C++ regular expressions made easy. [MIT]
CTRE 3,404 4 months ago A Compile time PCRE (almost) compatible regular expression matcher. [MIT]
Hyperscan 4,857 9 months ago Hyperscan is a high-performance multiple regex matching library by Intel. Provides simultaneous matching of large numbers of regexps (up to tens of thousands). Typically used in a DPI library stack. [BSD]
Oniguruma 2,331 about 2 months ago A modern and flexible regular expressions library that supports a variety of character encodings. [BSD]
PCRE A regular expression C library inspired by the regular expression capabilities in Perl. [BSD]
PIRE 332 over 4 years ago Perl Incompatible Regular Expressions library by Yandex. Can be really fast (more than 400 MB/s). [LPGL v3.0]
RE2 9,023 about 1 month ago A software library for regular expressions via a finite-state machine using automata theory. [BSD-3-Clause]
SLRE 535 about 4 years ago Super Light Regexp engine for C/C++. [GPLv2/Proprietary]
sregex 617 about 3 years ago A non-backtracking NFA/DFA-based Perl-compatible regex engine library for matching on large data streams. [BSD]
SRELL Unicode-aware regular expression template library for C++. [BSD]
Vectorscan 515 2 months ago A portable fork of the high-performance regular expression matching library. [BSD-3-Clause]

Awesome C++ / Robotics

MOOS-IvP A set of open source C++ modules for providing autonomy on robotic platforms, in particular autonomous marine vehicles
MRPT Mobile Robot Programming Toolkit. [BSD]
PCL 10,071 about 1 month ago Point Cloud Library is a standalone, large scale, open project for 2D/3D image and point cloud processing. [BSD]
Robotics Library (RL) A self-contained C++ library for robot kinematics, motion planning and control. [BSD]
RobWork A collection of C++ libraries for simulation and control of robot systems. [Apache2]
ROS Robot Operating System provides libraries and tools to help software developers create robot applications. [BSD]
Ruckig 747 about 1 month ago Real-time motion generation for robots and machines. [MIT]
YARP (Yet Another Robot Platform) 530 about 1 month ago Library and toolkit for communication and device interfaces. [BSD-3-Clause]
SPICE Toolkit 20 over 2 years ago Library and toolkit for computing geometric information used in planning and analyzing science observations obtained from robotic spacecraft. [MIT]

Awesome C++ / Scientific Computing

AMGCL 751 9 months ago a header-only C++ library for solving large sparse linear systems with algebraic multigrid. [MIT]
Au 331 about 1 month ago A C++14-compatible physical units library with no dependencies and a single-file delivery option. Emphasis on safety, accessibility, performance, and developer experience. [Apache 2.0]
FFTW A C library for computing the DFT in one or more dimensions. [GPL]
GSL GNU scientific library. [GPL]
preCICE 765 about 1 month ago Coupling library for partitioned multi-physics simulations (FSI, CHT, and more). [LGPL]
TileDB 1,878 about 1 month ago Fast Dense and Sparse Multidimensional Array DBMS. [MIT]
Trilinos 1,225 about 1 month ago High performance PDE solvers. [BSD]
Torch 9,001 about 2 years ago A scientific computing framework with wide support for machine learning algorithms that puts GPUs first. [BSD-3-Clause]

Awesome C++ / Scripting

AngelScript AngelScript is a game-oriented interpreted/compiled scripting language. [zlib]
Boost.Python 476 about 1 month ago A C++ library which enables seamless interoperability between C++ and the Python programming language. [Boost]
cppimport 1,195 8 months ago Import C++ files directly from Python! [MIT]
CppSharp 3,153 3 months ago Tools and libraries to glue C/C++ APIs to high-level languages. [MIT]
ChaiScript 2,961 11 months ago An easy to use embedded scripting language for C++. [BSD]
ctypes.sh 2,109 7 months ago A foreign function interface for bash. [MIT]
Cython 9,606 about 1 month ago Cython is an optimising static compiler for both the Python programming language and the extended Cython programming language (based on Pyrex). It makes writing C extensions for Python as easy as Python itself. [Apache]
djinni A tool for generating cross-language type declarations and interface bindings. [Apache2]
Duktape 5,971 10 months ago An embeddable JavaScript engine with compact footprint. [MIT]
JavaCpp 4,519 about 2 months ago The missing bridge between Java and native C++. [Apache2]
libffi 3,240 about 1 month ago A portable foreign-function interface library. [MIT]
Lua A minimal and fast scripting engine for configuration files and basic application scripting. [MIT]
LuaBridge 1,656 about 1 month ago A lightweight, dependency-free library for binding Lua to C++. [MIT]
LuaBridge3 257 4 months ago A lightweight, dependency-free library for binding Lua, LuaJIT, Luau and Ravi to C++. [MIT]
luacxx 157 almost 7 years ago C++11 API for creating Lua bindings. [MIT]
MiniScript scripting language modern, elegant, easy to learn, and easy to embed in your own C# or C++ projects. [MIT]
nbind 1,980 over 5 years ago Magical headers that make your C++ library accessible from JavaScript. [MIT]
PHP-CPP 1,430 3 months ago A library to build PHP extensions with C++. [Apache2]
pocketpy 1,656 about 1 month ago C++17 header-only Python interpreter for game scripting. [MIT]
pybind11 15,935 about 1 month ago Seamless operability between C++11 and Python. [BSD]
QuickJS a small and embeddable JavaScript engine. [MIT]
SIP C or C++ Bindings Generator for Python v2 and v3. [GPL]
sol2 4,282 2 months ago A C++ <-> Lua API wrapper with advanced features and top notch performance. [MIT]
SWIG 5,828 about 1 month ago A wrapper/interface Generator that let you link your c++ code to JavaScript, Perl, PHP, Python, Tcl and Ruby. [GPL/Output not licensed]
txiki.js 2,590 about 1 month ago A tiny JavaScript runtime. [MIT]
V7 1,429 about 4 years ago An embedded JavaScript engine. [GPL2]
V8 A fast JavaScript engine by Google that can be embedded into any C++ application. [BSD]
v8pp 913 6 months ago Header-only library to expose C++ classes and functions into V8 to use them in JavaScript code. [BOOST]
ChakraCore 9,136 5 months ago -A JavaScript engine by Microsoft that can be embedded into nodejs. [MIT]

Awesome C++ / Serialization

Bitsery 1,090 6 months ago Header only C++ binary serialization library. [MIT]
Bond 2,615 2 months ago An open source, cross-platform framework for working with schematized data. [MIT]
Boost.Serialization 122 about 1 month ago Boost Serialization Library. [Boost]
Cap'n Proto 11,788 about 1 month ago Fast data interchange format and capability-based RPC system. [MIT]
cereal 4,257 5 months ago A C++11 library for serialization. [BSD]
cista 1,852 about 1 month ago A C++17 library for zero-copy high-performance (de-)serialization. [MIT]
cppcodec 624 over 2 years ago Header-only C++11 library to encode/decode base64, base32 and hex with consistent, flexible API. [MIT]
FastBinaryEncoding 889 10 months ago Fast Binary Encoding is ultra fast and universal serialization solution for C++, C#, Go, Java, JavaScript, Kotlin, Python, Ruby, Swift. [MIT]
FlatBuffers 23,472 about 2 months ago A Memory efficient serialization library. [Apache2]
Kaitai Struct A declarative language to describe various binary data structures and a compiler to generate C++ parser code. [GPLv3+][MIT][Apache2]
iguana 1,130 about 1 month ago a modern, universal and easy-to-use serialization engine developed in C++20 and C++17. [Apache2]
MessagePack 3,041 3 months ago Efficient binary serialization format "like JSON" for C and C++. [Apache2]
mrpt-serialization 1,972 about 1 month ago Versioned serialization to binary or text formats. [BSD]
nanopb 4,415 about 1 month ago Small code-size Protocol Buffers implementation in ANSI C. [Zlib]
protobuf 65,999 about 1 month ago Protocol Buffers - Google's data interchange format. [BSD]
protobuf-c 2,709 6 months ago Protocol Buffers implementation in C. [BSD]
Protocol Puffers 157 about 2 months ago A little, highly templated, and protobuf-compatible serialization/deserialization header-only library written in C++20. [Apache-2.0]
SimpleBinaryEncoding 3,136 about 1 month ago encoding and decoding application messages in binary format for low-latency applications. [Apache2]
upb 1,504 about 1 month ago A small protobuf implementation in C. [BSD]
Wirehair 272 about 1 year ago O(N) Fountain Code for Large Data. [BSD-3-Clause]
YAS 734 10 months ago Very fast et nother erialization library supports the binary/text/json formats. [Boost]
zpp_bits 755 2 months ago Actually, the fastest modern erialization library. Just check

Awesome C++ / Serial Port

Asio 5,016 about 2 months ago Asio includes classes for creating and manipulating serial ports in a portable manner. [Boost]
Boost.Asio 1,260 about 1 month ago Boost.Asio includes classes for creating and manipulating serial ports in a portable manner. [Boost]
CSerialPort 745 about 1 month ago lightweight cross-platform serial port library. [LGPL3]
Libserial 427 4 months ago Serial Port Programming in C++. [BSD-3-Clause]
Serial Communication Library 2,172 5 months ago Cross-platform, Serial Port library written in C++. [MIT]

Awesome C++ / Sorting

cpp-sort 629 3 months ago Sorting algorithms & related tools for C++14. [MIT]
pdqsort 2,381 about 1 year ago Pattern-defeating quicksort. [zlib]
Timsort 303 about 2 months ago A templated stable sorting function which outperforms quicksort-based algorithms including std::sort, for reversed or semi-sorted data. [MIT]
Indiesort 19 9 months ago A sort wrapper which enables the use of std::sort (& other random-access sort functions) with non-random-access containers, and also improves sort performance for large/non-trivially-copyable types in random-access containers and arrays. [zLib]

Awesome C++ / Video

libvpx VP8/VP9 Codec SDK. [BSD]
FFmpeg A complete, cross-platform solution to record, convert and stream audio and video. [LGPL2/GPL2]
avcpp 461 2 months ago Modern C++ wrapper around FFmpeg. [MIT]
libde265 1,727 2 months ago Open h.265 video codec implementation. [LGPL]
x265 Open h.265 video codec implementation. [GPL2]
OpenH264 5,597 about 1 month ago Open Source H.264 Codec. [BSD]
Theora A free and open video compression format. [BSD]
Vireo 936 about 3 years ago A lightweight and versatile video processing library by Twitter. [MIT]

Awesome C++ / Virtual Machines

CarpVM 981 almost 4 years ago "interesting" VM in C. Let's see how this goes. [GPLv3]
MicroPython 19,551 about 1 month ago Aims to put an implementation of Python 3.x on a microcontroller. [MIT]
TinyVM 3,207 almost 6 years ago A small, fast, lightweight virtual machine written in pure ANSI C. [MIT]

Awesome C++ / Web Application Framework

Civetweb 2,929 about 2 months ago Provides easy to use, powerful, C/C++ embeddable web server with optional CGI, SSL and Lua support. [MIT]
C++ REST SDK 8,041 about 2 months ago Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. [MIT]
CppCMS A Free High Performance Web Development Framework (not a CMS). [LGPLv3]
Crow 3,379 about 2 months ago Crow is a C++ microframework for running web services. It uses routing similar to Python's Flask. [BSD]
Cutelyst 921 about 1 month ago A C++ Web Framework built on top of Qt, using the simple approach of Catalyst (Perl) framework. [BSD-3-Clause]
Drogon 11,701 about 1 month ago A C++14/17 based, high-performance HTTP application framework. [MIT]
C++ wfrest 896 about 1 month ago C++ Web Framework REST API. [Apache2]
facil.io 2,178 about 2 months ago Evented, high performance C web framework supporting HTTP, WebSockets, SSE and more. [MIT]
Kore ultra fast and flexible web server / framework for web applications developed in C. [ISC]
libOnion lightweight library to help you create webservers in C programming language. [LGPLv3]
lwan 5,946 3 months ago Experimental, scalable, high performance HTTP server. [GPL2]
oat++ 7,958 about 1 month ago Light, zero-dependency framework to create high-performance web-services. [Apache-2.0]
Pistache Pistache is a C++ REST framework written in pure C++11 with no external dependency. [Apache2]
QDjango 269 over 6 years ago A web framework written in C++ and built on top of the Qt library. Where possible it tries to follow django's API, hence its name. [LGPL]
TreeFrog Framework 1,297 about 2 months ago High-speed and full-stack web application framework based on C++ and Qt, which supports HTTP and WebSocket protocol (with O/R mapping). [BSD]
userver 2,479 about 1 month ago Asynchronous C++17 framework with a rich set of abstractions and database drivers for fast and comfortable creation of efficient microservices, services and utilities. [Apache-2.0]
Wt A C++ library for developing web applications. [GPL/Proprietary]

Awesome C++ / XML

Boost.PropertyTree 55 about 1 month ago A property tree parser/generator that can be used to parse XML/JSON/INI/Info files. [Boost]
Expat An XML parser library written in C. [MIT]
Libxml2 The XML C parser and toolkit of Gnome. [MIT]
libxml++ An XML Parser for C++. [LGPL2]
Mini-XML 454 2 months ago A small XML parsing library written in ANSI C. [LGPL2 with exceptions]
PugiXML A light-weight, simple and fast XML parser for C++ with XPath support. [MIT]
RapidXml An attempt to create the fastest XML parser possible, while retaining useability, portability and reasonable W3C compatibility. [Boost]
TinyXML A simple, small, minimal, C++ XML parser that can be easily integrating into other programs. [zlib]
TinyXML2 5,139 about 1 month ago A simple, small, efficient, C++ XML parser that can be easily integrating into other programs. [zlib]
TinyXML++ 92 over 2 years ago A completely new interface to TinyXML that uses MANY of the C++ strengths. Templates, exceptions, and much better error handling. [MIT]
Xalan C 29 10 months ago A library and a command line program to transform XML documents using a stylesheet that conforms to XSLT 1.0 standards. [Apache-2.0]
Xerces-C++ A validating XML parser written in a portable subset of C++. [Apache2]

Awesome C++ / Yaml

mini-yaml 222 almost 2 years ago Single header YAML 1.0 C++11 serializer/deserializer. [MIT]
yaml-cpp 5,212 2 months ago A YAML parser and emitter in C++. [MIT]
rapidyaml 592 2 months ago Rapid YAML is a C++ library to parse and emit YAML. [MIT]

Awesome C++ / Miscellaneous

access_profiler 74 about 11 years ago A tool to count accesses to member variables in c++ programs. [GPL3]
American fuzzy lop a.k.a. afl-fuzz - Crazy fuzzing tool that automatically discovers bugs given time and minimal example input. [Apache2]
Argon2 4,837 5 months ago The password hash Argon2, winner of PHC. [CC0/Apache2]
Better String An alternative to the string library for C which is more functional and does not have buffer overflow overrun problems. Also includes a C++ wrapper. [BSD, GPL2]
Boost.Signals2 77 about 1 month ago An implementation of a managed signals and slots system. [Boost]
casacore A set of c++ core libraries derived from aips++. [LGPL]
CCTZ 597 about 2 months ago a C++ library for translating between absolute and civil times using the rules of a time zone. [Apache-2.0]
Cheat Sheets of HackingCPP Cool cheat sheets and infographics for algorithms, views, containers, randomness, etc
Concord 528 about 1 month ago A Discord API wrapper library written in C. [MIT]
CPPItertools 1,372 3 months ago Range-based for loop add-ons inspired by the Python builtins and itertools library. [BSD-2-Clause]
cpp-lazy 340 about 1 month ago a fast and easy lazy evaluation library for C++11/14/17/20. [MIT]
CRCpp 343 9 months ago Easy to use and fast C++ CRC library. [BSD-3-Clause]
cxx-prettyprint 561 about 2 years ago A pretty printing library for C++ containers. [Boost]
date 3,190 about 1 month ago A date and time library based on the C++11/14/17
D++ (DPP) 1,092 about 1 month ago A lightweight, high performance and scalable C++ library for creating Discord Bots. [Apache2]
DynaMix 673 3 months ago A library which allows you to compose and modify objects at run time. [MIT]
emio 133 about 1 month ago A safe and fast high-level and low-level character input/output library. [MIT]
faker-cxx 325 about 1 month ago C++20 Faker library for generating fake (but realistic) data for testing and development. [MIT]
fast_float 1,643 about 1 month ago Fast, Exact C++ from_chars, 4x to 10x faster than strtod, part of GCC 12, Chromium, Redis, Webkit/Safari. [Apache2/BSL-1.0/MIT]
FastFormat Fast, Safe C++ Formatting inspired by log4j and Pantheios. [Simplified BSD]
fast_io 689 about 1 month ago Significantly faster input/output for C++20. [MIT]
fccf 362 3 months ago A command-line tool that recursively searches a directory to find C/C++ source code matching a search string. [MIT]
{fmt} 20,980 about 1 month ago Small, safe and fast formatting library for C++. [Simplified BSD]
gcc-poison 189 about 11 years ago A simple header file for developers to ban unsafe C/C++ functions from applications
happly 325 12 months ago A C++ header-only parser for the PLY file format. Parse .ply happily! [MIT]
hedley 794 4 months ago A C/C++ header file designed to smooth over some platform-specific annoyances
HighwayHash 1,549 9 months ago Fast strong hash functions: SipHash/HighwayHash. [Apache-2.0]
icecream-cpp 585 about 1 month ago A small printing library for debugging purposes. [MIT]
inja 1,689 3 months ago A Template Engine for Modern C++. [MIT]
Jinja2С++ 505 about 2 months ago almost full-conformance template engine implementation
jwt-cpp 928 2 months ago A header only library for creating and validating JSON web tokens in C++. [MIT]
Kangaru 504 about 2 months ago A dependency injection container for C++11 and C++14. [MIT]
Klib 4,227 8 months ago Small and lightweight implementations of common algorithms and data structures. [MIT]
libcpuid 461 about 1 month ago A small C library for x86 CPU detection and feature extraction. [BSD]
libenvpp 130 about 2 months ago A modern C++ library for type-safe environment variable parsing. [Apache-2.0]
libevil 29 almost 13 years ago The Evil License Manager. [GPLv3]
libnih 89 about 3 years ago A lightweight library of C functions and structures. [GPL2.1]
libsigc++ 390 about 1 month ago A typesafe callback system for standard C++. [LGPL]
libusb A universal USB library which allows for portable access to USB devices. [LGPL2]
Mach7 1,286 about 3 years ago A Pattern-matching library for C++. [BSD]
mio 1,729 11 months ago Cross-platform C++11 header-only library for memory mapped file IO. [MIT]
MPH 181 about 1 month ago C++20 [Minimal] Static Perfect Hash library. [MIT]
PEGTL 1,957 about 1 month ago The Parsing Expression Grammar Template Library. [MIT]
Pipes 808 3 months ago Pipelines for expressive code on collections in C++. [MIT]
pprint 912 almost 5 years ago Pretty Printer for Modern C++. [MIT]
pspsdk 887 about 1 month ago An open-source SDK for PSP homebrew development. [BSD/GNU GPL3]
QtVerbalExpressions 64 almost 10 years ago This Qt lib is based off of the C++ VerbalExpressions library. [MIT]
RapidFuzz 250 about 1 month ago Rapid fuzzy string matching in C++ using the Levenshtein Distance. [MIT]
rapidhash 234 about 1 month ago Very fast, high quality, platform-independent hashing algorithm. [BSD-2-Clause]
Remote Call Framework Inter-process communication framework for C++. [GPL2/Proprietary]
reproc 562 10 months ago A cross-platform (C99/C++11) process library. [MIT]
scnlib 1,098 2 months ago scanf for modern C++. [Apache-2.0]
Scintilla A free source code editing component. [MIT]
SDS 4,955 9 months ago Simple Dynamic Strings library for C. [BSD]
semver.c 185 almost 5 years ago A semver parser and render in ANSI C. [MIT]
sigslot C++ Signal/Slot Library. [PublicDomain]
SimpleSignal 165 over 5 years ago High performance C++11 signals. [PublicDomain]
Stage 404 almost 4 years ago Mobile robot simulator. [GPL2]
stb 27,210 2 months ago A range of single-file libraries for C/C++. [PublicDomain]
stdman 939 7 months ago A tool that parses archived HTML files from and generates groff-formatted manual pages for Unix-based systems. [MIT]
StringZilla 2,290 about 1 month ago the Godzilla of string libraries, splitting, sorting, and shuffling large textual datasets faster than you can say "Tokyo Tower". [Apache-2.0]
StrTk A C++ library consisting of high performance string processing routines. [MIT]
tgbotxx 11 about 1 month ago Telegram Bot C++ Library. [MIT]
tiny::optional 107 about 1 month ago Replacement for std::optional that does not waste memory unnecessarily. [BSL-1.0]
Tulip Indicators A C library of over 100 financial technical analysis indicators. [LGPL]
ub-canaries 176 almost 6 years ago A collection of C/C++ programs that try to get compilers to exploit undefined behavior
value-category-cheatsheet 406 over 1 year ago A PDF cheatsheet for lvalues, rvalues, and the like. [Jank copyleft]
VarTypes 16 almost 7 years ago A feature-rich, object-oriented framework for managing variables in C++ / Qt4. [LGPL]
Wildcards 80 10 months ago A simple C++ header-only template library implementing matching using wildcards. [BSL-1.0]
ZBar A barcode scanner library, which allows to scan photos/images/video streams for barcodes and return their value. [LGPL2]
ZXing 32,916 about 2 months ago An open-source, multi-format 1D/2D barcode image processing library implemented in Java, with ports to other languages. [Apache]

Software / Compiler

8cc 6,166 9 months ago A Small C Compiler
c 2,107 about 1 year ago Compile and execute C "scripts" in one go! [MIT]
Clang A C compiler for LLVM. Supports C++11/14/1z C11. Developed by LLVM Team. [NCSA]
GCC GNU Compiler Collection. Supports C++11/14/1z C11 and OpenMP. [GNU GPL3]
PCC A very old C compiler. Supports C99
Intel C++ Compiler Developed by Intel
LLVM Collection of modular and reusable compiler and toolchain technologies
Microsoft Visual C++ MSVC, developed by Microsoft
Open WatCom Watcom C, C++, and Fortran cross compilers and tools. [Sybase Open Watcom Public License]
Oracle Solaris Studio C, C++ and Fortran compiler for SPARC and x86. Supports C++11. Available on Linux and Solaris. [OTN Developer License]
TCC Tiny C Compiler. [LGPL]

Software / Online Compiler

codechef A simple online compiler CodeChef
codepad An online compiler/interpreter, and a simple collaboration tool
coliru Online compiler/shell with support for various C++ compilers
Compiler Explorer An interactive compiler with assembly output available
CompileOnline Compile and Execute C++ online on Linux
Ideone An online compiler and debugging tool which allows you to compile source code and execute it online in more than 60 programming languages
Programiz An online compiler for learners and developers
repl.it A powerful yet simple tools and platforms for educators, learners, and developers
Rextester Online compiler which provides several compilers(Clang, GCC, MSVC) and several editors
Try It Online TIO is a family of online interpreters for an evergrowing list of practical and recreational programming languages
Wandbox An online Clang/GCC compiler with Boost available
paiza.io An online C/C++ compiler with multiple files supporting feature, GitHub(gist) integration and collaborative editing
InterviewBit A simple and easy to use online C++ compiler

Software / Debugger

Comparison of debuggers A list of Debuggers from Wikipedia
GDB GNU Debugger
LLDB The LLDB Debugger
Metashell An interactive template metaprogramming shell which includes the MDB metadebugger
Valgrind A tool for memory debugging, memory leak detection, and profiling
x64dbg An open-source x64/x32 debugger for windows

Software / Integrated Development Environment

Anjuta DevStudio The GNOME IDE. [GPL3]
AppCode an IDE for Objective-C, C, C++, and JavaScript development built on JetBrains’ IntelliJ IDEA platform
Cevelop Cross-platform C and C++ IDE based on Eclipse CDT with additional plug-ins
CLion Cross-platform C and C++ IDE from JetBrains
Code::Blocks A free C, C++ and Fortran IDE
CodeLite Another cross-platform, free C and C++ IDE. [GPL2 with an exception for plugins]
color_coded 870 11 months ago A vim plugin for libclang-based highlighting. [MIT]
Dev-C++ A portable C/C++/C++11 IDE
Eclipse CDT A fully functional C and C++ IDE based on the Eclipse platform
Embarcadero Dev-CPP 2,631 7 months ago A fork of Dev-C++ that comes preinstalled with new themes and modern compilers. [GPLv2]
Geany Small, fast, cross-platform IDE. [GPL]
IBM VisualAge A family of computer integrated development environments from IBM
Irony-mode 912 about 1 year ago A C/C++ minor mode for Emacs powered by libclang
juCi++ Cross-platform, lightweight C++ IDE with libclang integration. [MIT]
KDevelop A free, open source IDE
Microsoft Visual Studio An IDE from Microsoft
Microsoft Visual Studio Code 165,346 about 1 month ago An open-source IDE from Microsoft. [MIT]
NetBeans An IDE for developing primarily with Java, but also with other languages, in particular PHP, C/C++, and HTML5
Qt Creator 2,652 about 1 month ago A cross-platform C++, JavaScript and QML IDE which is part of the SDK for Qt. [GPL3 with exceptions]
rtags 1,830 6 months ago A c/c++ client/server indexer with for integration with emacs based on clang
Xcode Developed by Apple
YouCompleteMe 25,503 about 1 month ago YouCompleteMe is a fast, as-you-type, fuzzy-search code completion engine for Vim
cquery 2,349 over 4 years ago A C++ code completion engine for vscode, emacs, vim, etc
C Playground - Online C Programming IDE An online IDE to practice C Programming where you can write, edit, and run code online

Software / Build Systems

Bazel A multi-language, fast and scalable build system from Google. [Apache]
Bear 5,081 about 1 month ago A tool to generate compilation database for clang tooling. [GPLv3]
Buck 8,559 about 1 year ago A fast build system that encourages the creation of small, reusable modules over a variety of platforms and languages including C++ developed and used at Facebook. Written in Java. [Apache]
build2 cross-platform build, packaging and dependency management toolchain for developing and packaging C/C++ projects. [MIT]
Ccache A fast C/C++ compiler cache. [GPLv3]
clib 4,885 5 months ago Package manager for the C programming language. [MIT]
CMake Cross-platform free and open-source software for managing the build process of software using a compiler-independent method. [BSD]
Cget 454 9 months ago Cmake package retrieval. [Boost]
Conan C/C++ Package Manager, open sourced. [MIT]
CPM 747 over 3 years ago A C++ Package Manager based on CMake and Git
FASTBuild High performance, open-source build system supporting highly scalable compilation, caching and network distribution
Hunter CMake driven cross-platform package manager for C++. [BSD-2]
MesonBuild An open source build system meant to be both extremely fast, and, even more importantly, as user friendly as possible
Ninja A small build system with a focus on speed
Sccache 5,902 about 1 month ago A fast compiler cache for C/C++, with cross-platform support and cloud backed storage options
Scons A software construction tool configured with a Python script
Sconsolidator Scons build system integration for Eclipse CDT
Spack A flexible package manager that supports multiple versions, configurations, platforms, and compilers. [Apache-2.0/MIT]
SW Cross-platform C++ (and other langs) Build System and Package Manager with a lot of packages available. [GPLv3]
tundra 438 5 months ago High-performance code build system designed to give the best possible incremental build times even for very large software projects
tup File-based build system that monitors in the background for changed files
Premake A tool configured with a Lua script to generate project files for Visual Studio, GNU Make, Xcode, Code::Blocks, and more across Windows, Mac OS X, and Linux
Vcpkg 23,503 about 1 month ago C++ library manager for Windows, Linux, and MacOS. [MIT]
waf Python-based framework for configuring, compiling and installing applications. [BSD]
XMake A C/C++ cross-platform build utility based on Lua. [Apache]

Software / Static Code Analysis

Cppcheck A tool for static C/C++ code analysis. -
CppDepend Simplifies managing a complex C/C++ code base by analyzing and visualizing code dependencies, by defining design rules, by doing impact analysis, and comparing different versions of the code
cpplint 1,601 about 2 months ago A C++ style checker following Google's C++ style guide
PVS-Studio A tool for bug detection in the source code of programs, written in C, C++ and C#
cpp-dependencies 747 over 1 year ago Tool to check C++ #include dependencies (dependency graphs created in .dot format). [Apache]
include-what-you-use 4,142 about 1 month ago A tool for use with clang to analyze includes in C and C++ source files
Infer 15,024 about 1 month ago A static analyzer for Java, C and Objective-C. [BSD]
OCLint A static source code analysis tool to improve quality and reduce defects for C, C++ and Objective-C. -
Clang Static Analyzer A source code analysis tool that finds bugs in C, C++, and Objective-C programs
Linticator Eclipse CDT integration of Pc-/FlexeLint
IKOS 2,746 about 2 months ago Static analyzer for C/C++ based on the theory of Abstract Interpretation. [NOSA 1.3]
List of tools for static code analysis A list of tools for static code analysis from Wikipedia
OptView2 136 4 months ago Inspect missed Clang optimizations
Trunk Toolkit to check, test, merge, and monitor code

Software / Coding Style Tools

Artistic Style A tool to format C/C++/C#/Obj-C/Java code. Also known as astyle
ClangFormat A tool to format C/C++/Obj-C code
Clang-Tidy Clang-based C++ linter tool
EditorConfig EditorConfig helps maintain consistent coding styles across different editors and IDEs
Uncrustify 2,878 about 1 month ago Code beautifier

Resources / API Design

Beautiful Native Libraries
Designing Qt-Style C++ APIs

Resources / Articles

CppCon 2023 Presentation Materials 290 10 months ago CppCon 2023 Presentation Materials
CppCon 2022 Presentation Materials 529 almost 2 years ago CppCon 2022 Presentation Materials
CppCon 2021 Presentation Materials 98 over 1 year ago CppCon 2021 Presentation Materials
CppCon 2020 Presentation Materials 1,628 over 4 years ago CppCon 2020 Presentation Materials
CppCon 2019 Presentation Materials 1,241 about 2 years ago CppCon 2019 Presentation Materials
CppCon 2018 Presentation Materials 1,427 almost 6 years ago CppCon 2018 Presentation Materials
CppCon 2017 Presentation Materials 1,790 about 4 years ago CppCon 2017 Presentation Materials
CppCon 2016 Presentation Materials 1,806 almost 7 years ago CppCon 2016 Presentation Materials
CppCon 2015 Presentation Materials 1,782 over 7 years ago CppCon 2015 Presentation Materials
CppCon 2014 Presentation Materials 2,274 about 9 years ago CppCon 2014 Presentation Materials
C++Now 2023 Presentations 83 over 1 year ago Presentation materials presented at C++Now 2023
C++Now 2022 Presentations 1 over 2 years ago Presentation materials presented at C++Now 2022
C++Now 2021 Presentations 4 over 1 year ago Presentation materials presented at C++Now 2021
C++Now 2019 Presentations 90 almost 5 years ago Presentation materials presented at C++Now 2019
C++Now 2018 Presentations 126 about 6 years ago Presentation materials presented at C++Now 2018
C++Now 2017 Presentations 490 about 6 years ago Presentation materials presented at C++Now 2017
C++Now 2016 Presentations 83 over 7 years ago Presentation materials presented at C++Now 2016
C++Now 2015 Presentations 202 over 9 years ago Presentation materials presented at C++Now 2015
C++Now 2014 Presentations 433 over 10 years ago Presentation materials presented at C++Now 2014
C++Now 2013 Presentations 190 about 6 years ago Presentation materials presented at C++Now 2013
C++Now 2012 Presentations 172 about 6 years ago Presentation materials presented at C++Now 2012

Resources / Books

List of Free C or C++ Books 60,620 about 1 month ago
Free C Books 341,306 about 1 month ago vhf/free-programming-books/C
Free C++ Books 341,306 about 1 month ago vhf/free-programming-books/C++
cppbestpractices 8,205 5 months ago Collaborative Collection of C++ Best Practices

Resources / Coding Standards

Cert C++
Misra C++ 2008
Autosar C++ 2014

Resources / Coding Style

C++ Core Guidelines 43,002 3 months ago "Official" set of C++ guidelines, reviewed by the author of C++
C++ Dos and Don'ts The Chromium Projects > For Developers > Coding Style > C++ Dos and Don'ts
google-styleguide 37,618 about 1 month ago Style guides for Google-originated open-source projects
Google C++ Style Guide
GNU Coding Standard
Linux kernel coding style
LLVM Coding Standards

Resources / Podcasts

CppCast The first podcast by C++ developers for C++ developers
CppChat A (sometimes) weekly look at what's going on in the world of C++ chatting with a guest from the community

Resources / Talks

C++ Conferences 9 5 months ago Catalog of C++ conferences
CppCon Talks The C++ conference
Quick game development with C++11/C++14 87 about 7 years ago CppCon 2014 talk by Vittorio Romeo
Presentation on Hana for C++Now 2015 10 over 6 years ago
Meeting Cpp Meeting C++ YouTube Channel

Resources / Videos

List of C or C++ YouTube Videos 60,620 about 1 month ago
Awesome C Programming Tutorials in Hi Def [HD] A collection of detailed C Programming Language Tutorials for Beginners and New Programmers
C++ by VoidRealms
C++ Qt Programming by VoidRealms
C++ Programming Tutorials Playlist TheNewBoston Official Buckys C++ Programming Tutorials Playlist
C++ Programming Tutorials from thenewboston These are all of thenewboston's C++ programming tutorials
C++ GUI with Qt Playlist Official Playlist for thenewboston C++ GUI with Qt tutorials
Caleb Curry's C Programming Tutorials An all-in-one playlist of tutorials for C programming
C Programming Tutorials All of TheNewBoston's C programming tutorials are right here
Bo Qian's playlist Boost Library, C++ Standard Library, Modern C++, Advanced C++, Advanced STL,
The Cherno's C++ Playlist Extensive C++ tutorial series by The Cherno
Code for Yourself C++ Playlist A complete C++ course covering everything from fundamentals to software design

Resources / Websites

Standard C++ News, Status & Discussion about Standard C++
Build Bench Compare C++ Builds
Quick Bench Quick C++ Benchmarks
CppCon The C++ Conference
C++ reference A complete online reference for the C and C++ languages and standard libraries
C++ by Example Learn C++ by Example
cplusplus.com The C++ Resources Network
C FAQ C frequently asked questions
C++ FAQ C++ frequently asked questions
C++ FQA Lite C++ frequently questioned answers
C++ Quiz A simple online quiz that you can use to test your knowledge of the C++ programming language
Guru of the Week A regular series of C++ programming problems created and written by Herb Sutter
Meeting C++
PVS-Studio’s challenge PVS-Studio’s C++ quiz in which you're asked to find errors in code fragments of open source projects
Udemy C++ Courses and Tutorials
C++ Hints Every business day hints about most often C++ mistakes and ways to solve them from PVS-Studio Team
C++ tutorial A user ranked online tutorial bank site displaying multiple courses to learn C++ from
C++ Tutorial for Beginners A comprenhensive tutorial on C++ curated by trained experts
cppexpert.online Learn the best C++ practices by improving code snippets with some problems or with bad practices
C++ for yourself A comprehensive tutorial on modern C++ covering everything from fundamentals to software design

Resources / Weblogs

Coding For Speed Coding For Speed DOT COM, Less Execution Time
Eric Niebler
Sticky Bits
Paul Fultz II's Blog
ridiculousfish Will It Optimize?
Embedded in Academia
Simplify C++
Fluent C++
Bartek's Coding Blog
Kenny Kerr
Sutter’s Mill
Vorbrodt's C++ Blog
foonathan::blog()
C++ Team Blog Dev blog from the Microsoft Visual C++ team

Resources / Other Awesome Projects

algorithms 5,291 6 months ago Algorithms & Data Structures in C++
c-algorithms 3,368 about 1 month ago C algorithms library
30 Seconds of C++ 1,449 about 1 year ago

Other Awesome Lists

lists 10,067 4 months ago List of (awesome) lists curated on GitHub
awesome-awesomeness 32,173 8 months ago A curated list of awesome awesomeness
awesome 337,709 about 1 month ago A curated list of awesome lists
C++ links 4,598 about 1 month ago A categorized list of C++ resources
Awesome C++ LibHunt's mirror
Awesome C 1
Awesome C 3,505 over 2 years ago 2
Awesome Modern C++ 12,012 5 months ago A collection of resources on modern C++
AwesomePerfCpp 2,385 over 2 years ago A curated list of awesome C/C++ performance optimization resources
free-programming-books 341,306 about 1 month ago List of Freely Available Programming Books
Inqlude The Qt library archive
papers-we-love 88,844 2 months ago Papers from the computer science community to read and discuss
awesome-algorithms 21,138 2 months ago A curated list of awesome places to learn and/or practice algorithms
awesome-hpp 3,553 6 months ago A curated list of awesome header-only C++ libraries
awesome-talks 6,102 5 months ago A lot of screencasts, recordings of user group gatherings and conference talks
Projects 45,469 5 months ago A list of practical projects that anyone can solve in any programming language
Awesome interview questions 71,974 6 months ago A list of lists of interview questions for the most popular technologies, including C and C++
nothings/single_file_libs 9,035 about 1 year ago List of single-file C/C++ libraries

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