awesome-ruby

active_admin

The administration framework for Ruby on Rails applications

rails_admin

A Rails engine that provides an easy-to-use interface for managing your data

administrate

A framework for creating flexible, powerful admin dashboards in Rails

RubySpamAssassin

Kills Spam Dead. Perhaps before it's sent!

sprockets

Rack-based asset packaging system

rails-assets

is the frictionless proxy between Bundler and Bower

seal

A C library (with Ruby binding) for 3D audio rendering

Audited

Audited (formerly acts_as_audited) is an ORM extension that logs all changes to your Rails models

Logidze

Logs model changes via database triggers (PL/SQL functions). Fastest model diffs. PostgreSQL 9.5+ only

Devise

Devise is a flexible authentication solution for Rails based on Warden

Omniauth

OmniAuth is a flexible authentication system utilizing Rack middleware

Warden

General Rack Authentication Framework

AuthLogic

A simple ruby authentication solution

Sorcery

Magical authentication for Rails 3 & 4

CanCanCan

Authorization gem for Rails (continued version of CanCan from ryanb)

pundit

Minimal authorization using object oriented design

authority

ORM neutral authorization

doorkeeper

An OAuth 2 provider for Rails

tiddle

Devise strategy for token authentication in API-only Ruby on Rails applications

teapot

A decentralised build tool for managing complex cross-platform projects

rack-cache

HTTP Caching for Ruby Web Apps

Dalli

a high performance pure Ruby client for accessing memcached servers

fog

The Ruby cloud services library

aws-sdk-ruby

The official AWS SDK for Ruby

An extendable Ruby on Rails CMS that supports Rails 3.2 and 4.2

Comfortable Mexican Sofa

A powerful Rails 4/5 CMS Engine

Humane Content Management for Rails

a brand new CMS system with super sexy UI and cool features

A no-fluff, open source content management system

A lightweight CMS, implemented in Sinatra

alchemy_cms

the most powerful, user friendly and flexible Rails CMS

weby

Newbie CMS in Ruby on Rails

sonarlint-intellij

An IDE extension that helps you detect and fix quality issues as you write code

Rubocop

A Ruby static code analyzer, based on the community Ruby style guide

ruby-lint

ruby-lint is a static code analysis tool for Ruby

brakeman

Static analysis tool which checks Ruby on Rails applications for security vulnerabilities

reek

Code smell detector for Ruby

Breezer

Lock your Gemfile dependencies to safe versions

The complete solution for Ruby command-line executables

Thor

Thor is a toolkit for building powerful command-line interfaces

sass

A CSS preproccessor

sass-rails

Rails stylesheet engine for Sass

less-rails

The dynamic stylesheet language for the Rails

compass

A a Stylesheet Authoring Environment

bootstrap-sass

Official Sass port of Bootstrap

foundation-rails

Foundation for Rails

bootswatch-rails

Bootswatches converted to SCSS ready to use in Rails

bourbon

A lightweight mixin library for Sass

kangal

Extended validation gem for email, subdomain, credit card, tax number etc

bin_checker

BIN validator for Turkish Banks

prosperity

The easiest way to graph data from your Rails models

Ruby interface to the PostgreSQL >= 8.4

mysql2

A modern, simple and very fast Mysql library for Ruby

sqlite3-ruby

Ruby bindings for the SQLite3 embedded database

stamp

Date and time formatting for humans

chronic

Natural language date/time parser

byebug

Debugging in Ruby 2

debugger

port of ruby-debug that works on 1.9.2 and 1.9.3

puts_debuggerer

Debugger-less debugging FTW

Puppet

Server automation framework and application

Chef

A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure

Vagrant is a tool for building and distributing development environments

Remote multi-server automation tool

Mina

Really fast deployer and server automation tool

Nanobox

A micro-PaaS (μPaaS) for creating consistent, isolated, Ruby environments deployable anywhere

fpm

Building packages for multiple platforms (deb, rpm, etc) with great ease and sanity

Dictum

A tool that let's you create automatic documentation of your Rails API endpoints through your tests

rdoc

HTML and online documentation for Ruby projects

yard

A Ruby Documentation tool

GitHub Starred Repos Downloader

gsrd downloads your public starred repos. Just in case you want to keep a backup of them from time to time

Active Merchant

A simple payment abstraction library extracted from Shopify

Spree

A complete open source e-commerce solution for Ruby on Rails

Square SDK

Use this gem to integrate Square payments into your app and grow your business with Square APIs including Catalog, Customers, Employees, Inventory, Labor, Locations, and Orders

Provides Ruby APIs for processing payments, recurring payments, subscriptions and transactions using PayPal's Merchant APIs

mail

A Really Ruby Mail Library

mailman

An incoming mail processing microframework in Ruby

chruby

Changes the current Ruby

chgems

Chroot for RubyGems

Ruby Version Manager

Groom your app’s Ruby environment

ruby-install

Installs Ruby, JRuby, Rubinius, MagLev or MRuby

ruby-build

Compile and install Ruby

Nanobox

A tool for creating isolated Ruby environments for consistency across teams and application stages (dev, staging, production, etc.)

Exception Notification

A set of notifiers for sending notifications when errors occur in a Rack/Rails application

The open source, self-hosted error catcher

Airbrake

The official Airbrake library for Ruby on Rails (and other Rack based frameworks)

Better Errors

Better error page for Rack apps

paperclip

Easy file attachment management for ActiveRecord

dragonfly

On-the-fly processing - suitable for image uploading in Rails, Sinatra and much more

carrierwave

Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks

attache

Yet another approach to file upload

abstract_feature_branch

a gem that enables developers to easily branch by abstraction

helioth

Manage feature flipping and rollout

flipper

feature flipping for ANYTHING

flip

Flip lets you declare and manage feature flags, backed by cookies (private testing) and database (site-wide)

rollout

Feature flippers

simple_form

Forms made easy for Rails

formtastic

A Rails form builder plugin with semantically rich and accessible markup

bootstrap_form

A Rails form builder that makes it super easy to integrate Bootstrap v4-style forms into your Rails application

A 2D game development library for the Ruby and C++ programming languages

geocoder

Complete Ruby geocoding solution

Geokit

Geokit gem provides geocoding and distance/heading calculations

katip

Change logger for Git initialized projects

glimmer

Ruby Desktop Development GUI Library

shoes

A tiny graphical app kit for ruby

shoes4

the next version of Shoes

EventMachine

EventMachine: fast, simple event-processing library for Ruby programs

Actor-based concurrent object framework for Ruby. It has its own

loofah

A general library for manipulating and transforming HTML/XML documents and fragments

httparty

Makes http fun again!

faraday

Simple, but flexible HTTP client library, with support for multiple backends

http

A simple Ruby DSL for making HTTP requests

excon

Usable, fast, simple HTTP(S) 1.1 for Ruby

nestful

Simple Ruby HTTP/REST client with a sane API

response_code

Response Code in readable way

rmagick

An interface to the ImageMagick and GraphicsMagick image processing libraries

minimagick

Minified version of rmagick

chunky_png

Read/write access to PNG images in pure Ruby

image_optim

Optimize images using multiple utilities

magickly

image manipulation as a (plugin-able) service

i18n

Basic internationalization(i18n) library for Ruby

globalize

Rails I18n de-facto standard library for ActiveRecord model/data translation

i18n-tasks

Manage translations in ruby applications with the awesome power of static analysis

Logstash

Logstash is a tool for managing events and logs

PredictionIO Ruby SDK

The PredictionIO Ruby SDK provides a convenient API to quickly record your users' behavior and retrieve personalized predictions for them

m2cgen

A CLI tool to transpile trained classic ML models into a native Ruby code with zero dependencies

Apartment

Database multi-tenancy for Rack (and Rails) applications

Treat

Treat is a toolkit for natural language processing and computational linguistics in Ruby

Databases on Rails. Build a persistent domain model by mapping database tables to Ruby classes

DataMapper is an Object Relational Mapper written in Ruby. The goal is to create an ORM which is fast, thread-safe and feature rich

The Database Toolkit for Ruby

Mongoid (pronounced mann-goyd) is an Object-Document-Mapper (ODM) for MongoDB written in Ruby

Ohm

Object-Hash Mapping for Redis

RubyGems is a package manager for the Ruby programming language that provides a standard format for distributing Ruby programs and libraries

Bundler provides a consistent environment for Ruby projects by tracking and installing the exact gems and versions that are needed

Homebrew installs the stuff you need that Apple didn’t

Cask provides a friendly homebrew-style CLI workflow for the administration of Mac applications distributed as binaries

kaminari

A Scope & Engine based, clean, powerful, customizable and sophisticated paginator

will_paginate

Pagination library for Rails 3, Sinatra, Merb, DataMapper, and more

order_query

Keyset pagination to find the next or previous record(s) relative to the current one efficiently, e.g. for infinite scroll

DocRaptor

Wrapper library for Ruby-based HTML-to-PDF API

wicked_pdf

PDF generator (from HTML) plugin for Ruby on Rails

pdfkit

HTML+CSS to PDF using wkhtmltopdf

prawn

Fast, Nimble PDF Writer for Ruby

InvoicePrinter

Super simple PDF invoicing in Ruby (built on top of Prawn)

rabbit

A programable presentaton tool by Ruby

reveal-ck

Reveal.js presentations with a Ruby toolset

Parallel

Ruby parallel processing made simple and fast

bullet

help to kill N+1 queries and unused eager loading

Rpush

The push notification service for Ruby

apn_sender

Background worker to send Apple Push Notifications over a persistent TCP socket

Houston

A simple gem for sending Apple Push Notifications

webpush

Encryption Utilities for Web Push protocol

Resque

A Redis-backed Ruby library for creating background jobs, placing them on multiple queues

Delayed::Job

— Database backed asynchronous priority queue

Qu

A Ruby library for queuing and processing background jobs

Sidekiq

Simple, efficient background processing for Ruby

An opinionated micro-framework for creating REST-like APIs in Ruby

Rails::API

Rails for API only applications

jbuilder

Create JSON structures via a Builder-style DSL

rabl

General Ruby templating with json, bson, xml, plist and msgpack support

active_model_serializers

ActiveModel::Serializer implementation and Rails hooks

oat

Adapters-based API serializers with Hypermedia support for Ruby apps (HAL, Siren, JSONAPI)

APIcasso

An abstract API design as a Rails-based mountable engine. RESTfullize your legacy code

Serverless Software Development Platform for Ruby and Crystal developers

spreadsheet

The Spreadsheet Library is designed to read and write Spreadsheet Documents

caxlsx

Caxlsx excels at helping you generate beautiful Office Open XML Spreadsheet documents

caxlsx_rails

Axlsx-Rails provides an Axlsx renderer so you can move all your spreadsheet code from your controller into view files

roo

Roo implements read access for all spreadsheet types and read/write access for Google spreadsheets

google-spreadsheet-ruby

This is a library to read/write Google Spreadsheet

rubyXL

rubyXL is a gem which allows the parsing, creation, and manipulation of Microsoft Excel (.xlsx/.xlsm) Documents

Odf-report

Generates ODF files, given a template (.odt) and data, replacing tags

simple_xlsx_writer

Just as the name says, simple writter for Office 2007+ Excel files

remote_table

Open local or remote XLSX, XLS, ODS, CSV (comma separated), TSV (tab separated), other delimited, fixed-width files, and Google Docs

acts_as_caxlsx

acts_as_caxlsx lets you turn any ActiveRecord::Base inheriting class into an excel spreadsheet

activeadmin-caxlsx

This gem uses caxlsx to provide excel/xlsx downloads for resources in Active Admin

to_spreadsheet

Render XLSX from Rails using existing views

write_xlsx

write_xlsx is a gem to create a new file in the Excel 2007+ XLSX format

excel_rails

Allows you to program spreadsheets using .rxls views

sheets

Work with spreadsheets easily in a native ruby format

workbook

Workbook contains workbooks, as in a table, contains rows, contains cells, reads/writes excel, ods and csv and tab separated files

Spreadsheet report

Simple tool for running queries against ActiveRecord and putting them into a Google Spreadsheet

oxcelix

A fast Excel 2007/2010 (.xlsx) file parser that returns a collection of Matrix objects

wrap_excel

WrapExcel is to wrap the win32ole, and easy to use Excel operations with ruby. Detailed description please see the README

write_xlsx_rails

xlsx renderer for Rails base on write_xlsx gem

Fastsheet

Fast spreadsheet reader using Rust native extensions

whenever

Cron jobs in Ruby

resque-scheduler

A light-weight job scheduling system built on top of resque

rufus-scheduler

Scheduler for Ruby

Clockwork is a cron replacement. It runs as a lightweight, long-running Ruby process which sits alongside your web processes (Mongrel/Thin) and your worker processes (DJ/Resque/Minion/Stalker) to schedule recurring work at particular times or dates

Thinking Sphinx

Sphinx plugin for ActiveRecord/Rails

elasticsearch-ruby

Ruby integrations for Elasticsearch

Searchkick

Intelligent search made easy

Algoliasearch Rails

AlgoliaSearch integration to your favorite ORM

PgSearch

PostgreSQL's full text search

Rroonga

The Ruby bindings of Groonga

Sunspot

Solr-powered search for Ruby objects

rack-google-analytics

Simple Rack middleware for implementing google analytics tracking

DataDog

A monitoring service for IT, operations and development teams

Instrumental

High-scale, non-blocking agent for application monitoring

Keen IO

Build analytics features directly into your Ruby apps

jekyll

A blog-aware, static site generator in Ruby

suspenders

A Rails template with our standard defaults, ready to deploy to Heroku

ruby2-rails4-bootstrap-heroku

A starter application based on Ruby 2, Rails 4 and Bootstrap for Sass, deployable on Heroku

rails-bootstrap

Rails 4.1 starter app with the Bootstrap front-end framework

rails4-starterkit

Rails 4.1 starter app with production ready performance, security, and authentication

cybele

Rails 4.x template with responder, simple form, haml, exception notification, etc

Read text and metadata from files and documents (.doc, .docx, .pages, .odt, .rtf, .pdf)

acts-as-taggable-on

A tagging plugin for Rails applications that allows for custom tagging along dynamic contexts

Slim

A templating lang that reduce the syntax to the essential parts without becoming cryptic

slim-rails

Rails port of Slim lang

Haml

HTML Abstraction Markup Language - A Markup Haiku

haml-rails

Rails port of Haml lang

BDD for Ruby

MiniTest

minitest provides a complete suite of testing facilities supporting TDD, BDD, mocking, and benchmarking

Cucumber Github

Cucumber is a tool that executes plain-text functional descriptions as automated tests

Behaviour Driven Development with elegacy and joy

Spinach

Spinach is a high-level BDD framework that leverages the expressive Gherkin language (used by Cucumber) to help you define executable specifications of your application or library's acceptance criteria

Rubytest is a testing meta-framework useful for creating highly customize test suites or building whole new test frameworks

Bare-metal Ruby assertion system standard used by Rubytest

Strict unit test system built on top of Rubytest

shoulda-matchers

Collection of testing matchers extracted from Shoulda

capybara

Acceptance test framework for web applications

RSpec-mocks

RSpec's 'test double' framework, with support for stubbing and mocking

Mocking and stubbing library with JMock/SchMock syntax, which allows mocking and stubbing of methods on real (non-mock) classes

FlexMock

Flexible mocking for Ruby testing

Faker

A library for generating fake data such as names, addresses, and phone numbers

ffaker

Faker Refactored

Forgery

Easy and customizable generation of forged data

simplecov

Code coverage for Ruby 1.9+ with a powerful configuration library and automatic merging of coverage

koala

A lightweight, flexible library for Facebook

fb_graph

A full-stack Facebook Graph API wrapper

twitter

A Ruby interface to the Twitter API

tweetstream

A simple library for consuming Twitter's Streaming API

gitlab

Ruby wrapper and CLI for the GitLab API

octokit.rb

Ruby toolkit for the GitHub API

instagram

The official gem for the Instagram API

linkedin

Ruby wrapper for the LinkedIn API

twilio-ruby

A Ruby gem for communicating with the Twilio API and generating TwiML

viewpoint-spws

A Microsoft Sharepoint Web Services library for Ruby

youtube_it

An object-oriented Ruby wrapper for the YouTube GData API

flickraw

Flickraw is a library to access flickr api

f00px

Official 500px api ruby gem

rspotify

Ruby wrapper for the Spotify Web API

streamio-ffmpeg

Simple yet powerful ruby FFmpeg wrapper for reading metadata and transcoding movies

upton

A batteries-included framework for easy web-scraping

Ruby on Rails is a full-stack web framework optimized for programmer happiness and sustainable productivity

Modular, scalable Ruby framework. Extremely fast, extremely efficient

(formerly Lotus) A complete full-stack application framework that is simple, fast and lightweight. Designed for scale

Sinatra is a DSL for quickly creating web applications in Ruby with minimal effort

The Godfather of Sinatra provides a full-stack agnostic framework on top of Sinatra

Cramp is a fully asynchronous real-time web application framework in Ruby

Cuba is a microframework for web development originally inspired by Rum, a tiny but powerful mapper for Rack applications

Pakyow is an open-source framework for the modern web. Build working software faster with a development process that remains friendly to both designers and developers. It's built for getting along

A complete Isomorphic Ruby Framework using React, Opal and Rails

puma

A simple, fast, threaded, and highly concurrent HTTP 1.1 server for Ruby/Rack applications

thin

A thin and fast web server

trinidad

Run Rails or Rack applications within an embedded Apache Tomcat container

unicorn

An HTTP server for Rack applications designed to only serve fast clients

passenger

A modern web server and application server for Ruby, Python, and Node.js

pow

Pow treats files and directories as ruby objects giving you more power and flexibility

goliath

is a non-blocking Ruby web server framework

Simple pub/sub messaging for the web

websocket-rails

Plug and play websocket support for ruby on rails

packetfu

A mid-level packet manipulation library for Ruby

chatterbot

A straightforward ruby-based Twitter Bot Framework, using OAuth to authenticate

sneakers

A fast background processing framework for Ruby and RabbitMQ

ransack

Object-based searching

cinch

The IRC Bot Building Framework

pry

An IRB alternative and runtime developer console

A lightweight and extensible IRB replacement

jazz_hands

Pry-based enhancements for the default Rails 3 and 4 consoles

awesome_print

A Ruby library that pretty prints Ruby objects in full color exposing their internal structure with proper indentation

friendly_id

Slugging and permalink plugins for ActiveRecord

backup

An elegant DSL in Ruby for performing backups on UNIX-like systems

kss

Documenting CSS and generating styleguides

AASM

A library for adding finite state machines to Ruby classes

JsonCompare

Returns the difference between two JSON files

blankable

Adds blank slates to index view in Rails

tcmb_currency

T.C.M.B. currencies for Money Gem

enumerize

Enumerated attributes with I18n and ActiveRecord/Mongoid support

lol_dba

lol_dba is a small package of rake tasks that scan your application models and displays a list of columns that probably should be indexed

annotate-models

Annotate ActiveRecord models

FastAttributes adds attributes with their types to the class

Github Changelog Generator

— automatically generate change log from your tags, issues, labels and pull requests on GitHub

Letter Opener

— Preview email in the default browser instead of sending it

Auto HTML

— Transforming URLs to appropriate resource (image, link, YouTube, Vimeo video,...)

OctoLinker

Navigate through projects on GitHub.com efficiently with the OctoLinker browser extension

Documentation with collection practices in ruby. Good for new ruby developers and beginners

vim-ruby

Vim/Ruby Configuration Files

vim-rails

rails.vim: Ruby on Rails power tools

Community driven news

A free, once–weekly e-mail round-up of Ruby news and articles

The latest news in the Ruby and Rails community

Ruby Programming Community Link Blog

Creator of Ruby lang

Creator of Rails framework

Ruby core committer and the developer of YARV

Committer to Nokogiri, Ruby, and Ruby on Rails

Host of Ruby Tapas webcasts

Ruby core committer