awesome-semantic-web

Unofficial Draft

This document summarizes the common understanding of the RDF Core Working Group (further referred to as WG) with regards to the theoretical foundation for datatyping of literal values and serves as a basis of definition, discussion, and comparison of all proposed schemes for achieving a complete datatyping solution which are to be considered by the WG

Knowledge Graph Platform for the Enterprise

build, explore and consume Knowledge Graphs

Enterprise information systems based on flexible data structures and deep semantics

Linked-data publishing for Government organisations

Semantic Web consulting and enterprise semantics platform provision

Free your data from silos

Create Knowledge Graphs from databases and datalakes. Core contributors to Ontop and experts in virtualization

Web-based, collaborative ontology and vocabulary editor, and knowledge graph solution platform

Provide a full stack of tools for data mapping, linking, vocabulary creation and develop an open source append only triple store (fluree.core)

Health related, known to use semantic graphs (marklogic)

DarkLight is an Artificial Intelligence Expert System for Active Cyber Defense and Trusted Information Sharing

Global information analytics business that helps institutions and professionals advance healthcare, open science and improve performance for the benefit of humanity

Self diagnosing app

DAM-as-a-Brain, a Platform that collects, interprets and makes any data and content actionable

Platform to build digital twins of organizations

Australian government's community of practice for Linked Data & Semantic Web

"Developing standards which help governments publish their data as effective and usable Linked Data, using Semantic Web technologies"

Research group, Institute for Computer Science at the University of Bonn, the Fraunhofer Institute for Intelligent Analysis and Information Systems (IAIS) and the Institute for Applied Computer Science Leipzig

The Research Group Agile Knowledge Engineering and Semantic Web (AKSW) is hosted by the Chair of Business Information Systems (BIS) of the Institute of Computer Science (IfI) / University of Leipzig as well as the Institute for Applied Informatics (InfAI)

WESO is a research group at the University of Oviedo founded in 2004

Department D5 of the Max Planck Institute for Informatics

Universität Paderborn

The Ontology Engineering Group (OEG) is based at the Computer Science School at Universidad Politécnica de Madrid (UPM)

Research group is based at the Vrije Universiteit Amsterdam (VU)

eXascale Infolab, University of Fribourg, Switzerland

Wimmics stands for Web-Instrumented Man-Machine Interactions, Communities, and Semantics, a joint research team between INRIA Sophia Antipolis - Méditerranée and I3S (CNRS and Université Côte d'Azur)

Data Semantics Lab, Wright State University

Stanford University Center for Biomedical Informatics Research

University of Fribourg, Switzerland

Ghent University, Belgium

Kansas State University, USA

Linköping University, Sweden

Freiburg, Germany

Freiburg, Germany

Web & Software Engineering research group @ Leipzig University of Applied Sciences (HTWK Leipzig)

qEndpoint

(OS) A highly scalable RDF triple store with full-text and GeoSPARQL support

Vedas

(OS) VEDAS is a RDF store engine that be able to query with SPARQL and run on single GPU

Akutan

(OS) A distributed knowledge graph store written in Golang. Formerly known as Beam

(OS)

($/F)

Halyard

(OS)

($/F)

(OS) A spatiotemporal RDF store

($/OS)

Marklogic

($)

($/OS)

($)

($/F)

(OS) A native RDF database for the .NET platform written in C#

CM-Well

(OS)

(OS)

4Store

(OS)

(OS)

Parliament

(OS)

(OS)

hbase-rdf

(OS)

TriplePlace

Light weight and flexible Triple Store for Android

(OS) A LevelDB-backed graph database for Node.js supporting quads, SPARQL queries and the RDF/JS interface

(OS)

luposdate

(OS) Semantic Web database

wallix/triplestore

(OS) Nifty library to manage, query and store RDF triples

levelgraph

(OS) Graph database JS style for Node.js and the Browser

($) Horizontly scalalbe in-memory triple store with parallel Datalog reasoning

gStore

(OS) - a graph based RDF triple store

ostrich

(OS) bird Versioned RDF triple store (Offset-enabled TRIple store for CHangesets)

QuitStore

Quads in Git - Git versioned RDF Triple Store with support for branching and mergin and more

(F)

($) A cloud-based graph database

redstore

(OS) RedStore is a lightweight RDF triplestore written in C using the Redland library

(OS) improved SQLite RDF triple store for Redland librdf

($) Amazon Neptune is a fast, reliable, fully managed graph database service that makes it easy to build and run applications that work with highly connected datasets

fabric

(OS) Fabric is a simple triplestore written in Golang

kineo

(OS) A persistent RDF quadstore and SPARQL engine

($)

(OS) Blockchain based triplestore

Oxigraph

(OS) a graph database implementing the SPARQL standard and written in Rust

(F/$)

(OS) Graph database + HTTP(S) server with authorization and versioning. Supports a strict subset of RDF

(OS) Graph database supporting native, memory, LMDB, Solr, Elastic backends. Formerly known as Sesame

(OS) Data, and its history, via change requests at scale

Tentris

(OS) A tensor-optimized RDF data store, supporting SPARQL queries with Basic Graph Pattern capabilities

TripleRush

(OS)

corese

(OS)

(OS)

gh-rdf3x

(OS)

Qamel

RDF4J ported to Andriod

DREAM

DREAM - Distributed RDF Engine with Adaptive Query Planner and Minimal Communication

RIQ

RIQ is a new software tool for fast processing of SPARQL queries on RDF quadruples

hyrise

Hyrise is a research in-memory database

Katts

Katts is A Triple Torrent Sieve

morph

Sparql-stream sensor queries

sepa

A JAVA implementation of the SPARQL Event Processing Architecture including the engine, APIs and tools

The is a configurable component that can be used to ingest, store, transform and (re-)publish an LDES

HeFQUIN

A query federation engine for heterogeneous federations of graph data sources

anapsid

An adaptive query processing engine for SPARQL endpoints

luposdate

A Semantic Web Database Management System developed by IFIS at the University of Lübeck

SPARQL2Git

Easily store and curate SPARQL queries (and their associated Linked Data APIs) in GitHub

sparql-transformer

A generic JSON-LD transformer

sparqlab

Lab for exercising SPARQL

SNORQL

Ajaxy front-end for exploring triple stores

d3-sparql

Query a SPARQL endpoint with a SELECT query and get the data ready to be used with d3js

d3sparql

JavaScript library for executing SPARQL query and transforming resulted JSON for visualization in D3.js

jdbc4sparql

A JDBC driver that takes data from SPARQL endpoints or RDF graphs

odata2sparql

An OData proxy server that takes data from SPARQL endpoints or RDF graphs and publishes as OData V4 endpoint

A GUI for discovery, search, and graph of RDF sources

SPARQL to XQuery Translator for use with MarkLogic Semantic Toolkit

YASGUI

Yet Another Sparql GUI

pubby

A Linked Data frontend for SPARQL endpoints

spanqit

Java-based SPARQL query generator

squebi

Squebi is a SPARQL editor and SPARQL result visualizer

zeppelin-sparql

Zeppelin sparql interpreter

Sparql-cli

Command line API for SPARQL

Trifid

Lightweight Linked Data Server and Proxy

asqc

SPARQL query client (pronounced "ask")

visu

Visual SPARQL query tool

Mac SPARQL editor and client

datastudio-sparql-connector

SPARQL Connector for Google Data Studio

QLever

Highly efficient query engine for SPARQL+Text

sage-engine

a SPARQL query engine for public Linked Data providers

SEPA

A JAVA implementation of the SPARQL Event Processing Architecture including the engine, APIs and tools

Processor

Ontology-driven Linked Data processor and server for SPARQL backends

SPARQL-powered Knowledge Graph management system

Build SPARQL queries with blocks

SparqlProg

composable SPARQL using logic programming

Sparklis

natural language query builder to explore and query endpoints with all the power of SPARQL yet without any knowledge of SPARQL

SPARQL with a JSON-LD super-set syntax (like GraphQL for the semantic web)

FedShop

A Benchmark for Testing the Scalability of SPARQL Federation Engines

An Evaluation of Triplestore Benchamrks

Holistic Benchmarking of Big Linked Data

IGUANA

IGUANA is a benchmark execution framework for triple stores

SRBench

A streaming sparql benchmark

TFT

TFT (Tester for Triplestore) is a script PHP to pass tests through a SPARQL service

A benchmark of object-triple mapping (OTM) libraries

GTFS-Madrid-Bench

A benchmark for performance and scalability of knowledge graph construction from heterogeneous data sources

GeoSPARQL Compliance Benchmark

A HOBBIT benchmark to check for the GeoSPARQL compliance of triple store implementations

RDF Library Benchmark

Comparison of HDT and non-HDT RDF libraries for query time and memory usage

– open and collaborative benchmark suite for streaming and non-streaming RDF systems

semantic-graphql

Create GraphQL schemas from RDF ontologies

GraphQL interface for querying and serving linked data on the Web

UltraGraphQL

extends HyperGraphQL with automatic bootstrapping phase and GraphQL mutations

Grasp

GraphQL endpoint wrapping SPARQL endpoints, declarative approach using Templates for SPARQL queries

tomayac/ldf-client

Polymer Linked Data Fragments client

LDFlex

A JavaScript DSL for querying Linked Data on the Web

A modular framework for querying Linked Data on the Web

HeFQUIN

A query federation engine for heterogeneous federations of graph data sources

Repository platform with native linked data support

warp

Warp an LDP file manager

Marmotta

Apache linked data platform implementation

Elda

Linked data platform from Epimorphics

gold

Linked Data server for Go

($)

ldpserver

A mini LDP Server written in Go

ldp-coap-framework

Linked Data Platform for the Constrained Application Protocol

cavendish

A LDP Implementation backed by BlazeGraph

RDF-DEV COMMUNITY GROUP

KG-Construction W3C Community Group

($) End-to-end platform to create and utilize enterprise knowledge graphs

OntoWiki

(OS) Semantic data wiki as well as Linked Data publishing engine

($) Cognitive Intelligence tool for machines to understand us

(OS) Collection of applications and libraries for creating, managing and sharing structured data

build, explore and consume Knowledge Graphs

Atomic Data Browser

(OS) Create, model, edit, view and share Linked Data

(OS) A knowledge graph for data-driven science

Map RDF graphs to property graphs and output pg, json-pg, neo4j, pgx, aws or dot formats

CLI and Python package to generate triples or nquads from CSV files and a configuration file

Karma

Transform data expressed in multiple data formats into RDF

Definition of Excel-based mappings and translation to [R2]RML mappings

RMLMapper

Java-based RML Processor for transforming heterogeneous data into RDF

RMLStreamer

Flink-based RML Processor for transforming heterogeneous data into RDF in a streaming fashion

Community Edition of the RML Editor to create RML mappings in a visual way

Shape Expressions Mapping Language. Map heterogeneous data via Shape Expression (ShEx)

Map XSD XML Schemas into the Web Ontology Language (OWL)

Map XML into RDF

Linked data integration framework, connectes different linked data resources and transforms structured data source

Framework for mapping RDF data to Java objects using annotations, enabling object-oriented interaction with RDF models

TripleGeo

TripleGeo utility for converting geospatial data into triples

Major Open Geospatial Consortium Semantic Web spatial data stadard

GeoSPARQL DGGS

An RDFlib-based SPARQL extensions library for geospatial data

A Excel -> SKOS RDF tool, based on RDFlib

guide-o-matic

Xquery scripts to convert fielded text (CSV) files to RDF serialized as XML, Turtle, and JSON-LD

COW

CSV On the Web (CSVW) converter

CSV2RDF

CSV to RDF mapper

CSV2RDF

Streaming, transforming, SPARQL-based CSV to RDF converter

Exploitation of RML+FnO and CSVW for ensuring the effectiveness of SPARQL-to-SQL systems

java2rdf

A simple library to map Java objects and Java beans onto RDF/OWL

PA4RDF

functionality on top of an RDF store while accounting for and exploiting the fundamental differences between graph storage and relational storage

Empire

JPA implementation for RDF

Pinto

A lightweight framework for mapping Java Beans into RDF and back again

Som(m)er

Semantic Object (Metadata) MappER

surfrdf

SuRF: a python Object RDF Mapper (ORM)

jtriple

A Java object model binding for RDF

sparql-template

RDF store traversal with Jena API via automatic mapping between POJO and SPARQL

JOPA

A Java object-triple mapping library for RDF4J, Jena and OWL API

RomanticWeb

RDF-Object Mapping for the Semantic Web

XML2RDF-DataTransformation-MappingTool

XML2RDF Data Transformation Tool (Mapping Tool): This generic data transformation tool maps XML data files to RDF files, given a schema matching definition, based on this Mapping Language Schema

d2rq

Database to RDF mapping engine and SPARQL server

Sparqlify

Sparql -> SQL Rewriter enabling virtual RDB -> RDF mappings

Sparqlify-Extendsions

Extension projects for Sparqlify

quetzal

SPARQL to SQL translation engine for multiple backends, such as DB2, PostgreSQL and Apache Spark

sparql-gremlin

SPARQL to Gremlin Translator available as a plugin of the popular Apache TinkerPop graph computing framework

Gremlinator

SPARQL to Gremlin standalone Translator available as an independent implementation for open use in custom use cases

ontmalizer

Comprehensive transformations of XML Schemas (XSD) and XML data to RDF/OWL automatically

R2RML-Parser

An R2RML implementation that can export relational database contents as RDF graphs

Morph-KGC

An R2RML engine that creates large knowledge graphs from RDB

MusicBrainz-R2RML

R2RML mappings for the MusicBrainz schema

ontop

Ontop is a platform to query relational databases as Virtual RDF Graphs using SPARQL. It's fast and is packed with features

($) Ontopic Studio is a GUI driven no-code application for designing standards compliant large R2RML mappings usable for Virtual RDF Graphs and RDF triple materialization. Academics can request free licenses

Antidot implementations of R2RML and Direct Mapping specifications

Juma, jigsaw puzzles for representing mapping, is a method that applies the block metaphor to mapping languages

pyrdb2rdf

A Python library for RDB2RDF Direct Mapping and R2RML

rdf2rml

R2RML Generation from simple examples

($)

AutoMap4OBDA

AutoMap4OBDA: Automated Generation of R2RML Mappings for OBDA

Map-On

A web-based editor for visual ontology mapping for R2RML documents

RMLMapper

Java-based RML Processor backwards compatible with R2RML

RDF Mapping language for mapping JSON, CSV and XML to RDF

CARML

CARML RML engine for mapping CSV, XML and JSON files to RDF

SDM-RDFizer

RML engine for efficient transformation of CSV, RDB, XML and JSON to RDF

FuMap

Efficient preprocessing of transformation rules described in RML+FnO mappings

Morph-KGC

RML and RML-star engine that creates large knowledge graphs from heterogeneous data sources

SPARQL Anything

A system for Semantic Web that allows users to query anything with SPARQL

was " "

A tool to process mappings from JSON data to RDF triples guided by an OWL2 ontology structure

mapping-template

A template-based component exploiting Apache Velocity to define mappings to/from RDF

Linked Open Vocabularies. Portal / search tool for vocabularies

Open repository with tools for ontologies and SKOS vocabularies; biomedical content dominates but all research domains welcome

Similar to LOV, but with a richer search interface

OLS is a repository for biomedical ontologies that aims to provide a single point of access to the latest ontology versions

The BioPortal software in Virtual Appliance (deployable) form

minimalist enterprise upper ontology - max coverage, fewest primitives, least ambiguity

Ontology package manager with semantic versioning and an

Basic Geo (WGS84 lat/long) Vocabulary

SKOS Simple Knowledge Organization System

SKOS Simple Knowledge Organization System eXtension for Labels

vCard Ontology - for describing People and Organizations

Describing Linked Datasets with the VoID Vocabulary

Time Ontology in OWL

The Organization Ontology

The RDF Data Cube Vocabulary

Vocabulary for describing quality metadata

Represent provenance information

DCAT is an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web

The Profiles Ontology is an RDF vocabulary to describe profiles of (one or more) standards for information resources

Vocabularies developed for/by public administrations

Friend of a Friend (FOAF) ontology

Integrated cross-species ontology covering anatomical structures in animals

Vocabulary for describing geographical addresses and features

Relation Ontology. Relationship types shared across multiple ontologies

orderedlistonto

The Ordered List Ontology

EVIDENCE & CONCLUSION ONTOLOGY

Beverage ontology

cyber-ontology

Cyber Intelligence Ontology

doap

RDF schema for describing software projects

qb4olap

A Vocabulary for Business Intelligence over Linked Data

Hydra

A lightweight vocabulary for hypermedia-driven Web APIs

vocab-transit

RDF Schema for transit data

ssso

Specification of Simple Service Status Ontology

dso

Specification of Document Service Ontology

Structured data on the Internet (Google, Microsoft, Yahoo and Yandex)

Semantic Publishing and Referencing Ontologies

Basic Formal Ontology

Common Core Ontology Suite

Toronto Virtual Enterprise Ontologies

Researchers and the full context in which they work

YAGO is a huge semantic knowledge base, derived from Wikipedia WordNet and GeoNames

MMOntologies

Multimedia ontologies studied for the paper "The Landscape of Multimedia Ontologies in the last Decade"

Wine Ontology is a popular example of an OWL ontology

A step-by-step guide to modelling in OWL using the popular Protégé OWL tools

An updated version of the well established pizza ontology tutorial covering Protégé 5+ as well as WebProtégé and introduces SHACL shapes

A joint initiative between EIT Digital, Université de Nice Sophia-Antipolis / Université Côte d'Azur and INRIA - introduces the Linked Data standards and principles that provide the foundation of the Semantic web

open, online, self-paced training materials on semantic engineering, ontology curation and ontology development

Ontology editor and framework for building intelligent systems

OntoVerbal

OntoVerbal is a Protege 4.2 plugin that generates natural language descriptions for classes for an ontology written in OWL

Reasonable Ontology Templates

dosdp-tools

dead simple owl design patterns (template tool)

OWLSharp

.NET library for OWL2-DL ontology modeling, validation and reasoning

Ontology Development Kit

set up a git repo for developing an ontology

command line swiss-army knife for ontology developers

Visual graph development

a web application to detect (semi)automatically 33 pitfalls or errors in ontologies. A web service is also provided

a cross-platform app for OWL ontology modeling, visualization, and natural-language validation

(with an optional Enterprise version) system for developing ontologies and skos ocabularies with native graph versioning that enables a git-inspired workflow. More info

FaCT++

and

cel

-A lightweight Description Logic reasoner for large-scale biomedical ontologies

reasonable

OWL 2 Reasoner built on DataFrog

eye

Euler Yet another proof Engine

Sequoia

Sequoia is a consequence-based OWL 2 DL Reasoner supporting multithreaded reasoning

Konclude is a high-performance reasoner for large and expressive ontologies

owlproofs

Extension to the OWL API to request proofs of entailments from the reasoner

[ ]

[ ]

serd

Lightweight C library for RDF syntax

sord

Sord is a lightweight C library for storing RDF statements in memory

librdf

Redland librdf RDF API and triple stores

raptor

Redland Raptor RDF syntax library

rasqal

Redland Rasqal RDF Query Library

cowl

A lightweight C API for working with OWL ontologies

hdt-cpp

Read and query

grafter

Linked Data & RDF Manufacturing Tools in Clojure

kr

Clojure API for RDF and SPARQL - provides consistent access to APIs including Jena and Sesame

clj-plaza

Clojure rdf framework

seabass

A library for working with RDF with Jena in Clojure

aristotle

RDF, SPARQL and OWL for Clojure

aesopica

A Clojure library designed to help create Semantic Web based applications

igraph

IGraph defines a protocol which aims to provide a general interface to a variety of graph-based representations

csv2rdf (clojure)

Clojure library and application for converting CSV to RDF

matcha

SPARQL-like DSL for querying in-memory Linked Data Models

table2qb

A generic pipeline for converting tabular data into rdf data cubes using csvw

rdf2go

Native golang library for RDF

knakk/rdf

RDF library for Go

soarql-dl-api

A query engine for SPARQL-DL

nxparser

Java parsers for different RDF serialisations + API + tools + JAX-RS integration

JB4JSON-LD

, - Java binding for JSON-LD (mapping POJO - JSON-LD)

titanium-json-ld

An implementation of the JSON-LD 1.1 (JSON-based Serialization for Linked Data) specification in Java utilizing Jakarta JSON Processing

hdt-java

Read and query

– implementation of the for Java and Scala, works with Apache Jena and RDF4J

sparql-engine

An open-source framework for building SPARQL query engines in Javascript/Typescript

JAvascript Suite for Sparql Access

Github Organization that maintains modern JavaScript RDF libraries based on open, maintained standards

rdflib.js

Linked Data API for JavaScript

sparks

Sparks is a set of JavaScript libraries designed for simplifying the access to RDF data

SPARQL.js

A parser for the SPARQL query language in JavaScript

sparqlalgebrajs

SPARQL to SPARQL Algebra converter

Construct form-based RDF editors in a web environment

graphy.js

A collection of RDF libraries for JavaScript developers with a focus on performance and usability

@zazuko/rdf-vocabularies

Library of common vocabularies

link-redux

View RDF resources in React

@ontologies

Like @types, but for ontologies

rdfdev-js

Collection of libraries to ease in JavaScript RDF development

DataBorg/client

Highly versatile SPARQL client for modern age

SPARQLKit

An implementation of the SPARQL 1.1 query language in Objective-C

Manipulate RDF graphs and execute Sparql queries

rdfInterface

Common interfaces for each RDF stack layer (parser, serializer, dataset, SPARQL client, etc.) to enable interoperability between different implementations. Think of it as PSR for RDF

quickRdf

A RDF library providing implementation of terms and dataset (using rdfInterface)

quickRdfIo

Collection of RDF parsers and serializers (using rdfInterface)

rdfHelpers

A set of helper classes for implementing the rdfInterface

sparqlClient

A SPARQL client library for the rdfInterface ecosystem with the API inspired by the PDO

and many more, see

RDFlib

A Python library for RDF manipulation, storage & serialization

SPARQLWrapper

A wrapper for a remote SPARQL endpoint

sparql-client

Python API to query a SPARQL endpoint

Bi-directional logical reasoning system for the semantic web

PyShEx

ShEx interpreter for ShEx 2.0

An RDF engine for Django projects

Djubby

Linked Data frontend for SPARQL endpoints for Django

sparta

Simple API for RDF

rdftools

Simple collection of python RDF tools

cysparql

CySparql is a python wrapper over the excellent rasqal RDF library for parsing SPARQL queries

pyHDT

Read and query with ease in Python

calamus

JSON-LD Serialization Library for Python based on Marshmallow

gastrodon

Toolkit to display, analyze, and visualize data and documents based on RDF graphs and the SPARQL query language using Pandas, Jupyter, and other Python ecosystem tools

kglab

The kglab library provides a simple abstraction layer in Python for building knowledge graphs

AmpliGraph

Python library for Representation Learning on Knowledge Graphs

Ontospy

Python library and command-line interface for inspecting and visualizing RDF models

semantic-python-overview

List of Python specific semantic web tools and resources

csvwr

Read and write CSVW tables and metadata in R

rcsvw

R package that implements the candidate recommendations from the W3C CSV on the Web Working Group

Work with linked-data idiomatically in R using data frames (expresses RDF resources and descriptions as S3 objects)

rdf-serializers

Adds RDF serialization to Ruby on Rails active model serializers

Horned OWL

Horned-OWL is a library for manipulating OWL data

Oxigraph

Oxigraph is a graph database implementing the SPARQL standard

sophia_rs

Sophia: a Rust toolkit for RDF and Linked Data

rio

Rio is a low level library which provides conformant and fast parsers and formatters for RDF related file formats

rdf-rs

rdf is a library for the Resource Description Framework (RDF) and SPARQL implemented in Rust

rome

Rome is an RDF library written in safe Rust

Library for managing and (de)serializaing Atomic Data, a strict subset of RDF

harriet

A format-preserving serialization/deserialization library for Turtle

owlish

An OWL library in Rust modeled on the OWL functional syntax

RDFtk

An RDF Toolkit for Rust

hdt-rs

Read and query

banana-rdf

A library for RDF, SPARQL and Linked Data technologies in Scala

SANSA-RDF

Library to read RDF files into Spark or Flink

scowl

A Scala DSL for programming with the OWL API

swift-sparql-syntax

SPARQL 1.1 Parser

URITemplate

Swift implementation of URI Template ( )

swift-serd

Swift package wrapper for the

kineo

A SPARQL endpoint and quadstore written in Swift

swift-hdt

An RDF Parser

sparql.vim

SPARQL syntax highlighting

ttl-mode

Supports both ttl and n3, indentation, some electric punctuation and hungry delete

nxml-mode is a major mode for editing XML

ELOT

Emacs Literate Ontology Tool, write OWL ontologies using org-mode

Editor for Turtle (Terse RDF Triple Language, TTL) files

Adds support for the RDF 1.2 (Turtle, TriG, N-Triples, N-Quads), SPARQL 1.2 and ShExC 2.1 languages as well as a bunch of productivity features

Linked Data syntaxes

Syntax highlighting for SPARQL 1.1/SPARQL*, Turtle/Turtle*, TriG, N-Triples, N-Quads, Notation3, and ShExC

Multi-platform Qt5-based browser and semantic agent for the distributed web. Uses RDF graphs and P2P-SparQL to synchronize linked-data between peers

LodView

RDF browser written in Java based on Spring and Jena using a SPARQL endpoint

RhizomerEye

A for interactive exploration of semantic and linked data available from SPARQL endpoints

RickView

RDF browser for small knowledge bases written in Rust using an in-memory graph, doesn't require a SPARQL endpoint. Optimized for high performance and low resource usage

Visual Notation for OWL Ontologies

rdfdot

Tools for drawing graphs from RDF files with GraphViz

ontodia

Ontodia data diagraming library

rdfpuml

True RDF Diagrams

Ontology Visualisation

Create graphs from RDF using GraphViz

Build SPARQL queries with blocks

a cross-platform app for OWL ontology modeling, visualization, and natural-language validation

Render RDF as a SVG graph

Render RDF as HTML

Graphical RDF Explorer for small datasets

Visualize knowledge graphs in a web browser

table2qb

a pipeline for converting tabular data into rdf data cubes using csvw

The ontologies the BBC is using to support its audience facing applications such as BBC Sport, BBC Education, BBC Music, News projects and more

PermID: Connecting Data to the World

Wikidata is a free and open knowledge base that can be read and edited by both humans and machines

The Linked Open Data Cloud

rdfagents

Real-time messaging for the Semantic Web

r43ples

Revision Management for the Semantic Web

RDFUnit

RDF Unit testing and validation framework

rdf-toolkit

RDF Serializer, to be used in a git commit-hook to force automatic correct rewrite of every OWL ontology

TripleChecker

Look for common errors in an RDF Document

owl2vcs

owl2vcs is a set of tools designed to facilitate version control of OWL 2 ontologies using version control systems

dowl

Generate docs for RDF/OWL Schema

TurtleValidator

A Turtle validator on command line and in browser

shi3ld-http

Shi3ld for HTTP: Access control for HTTP operations on Linked Data

babel

A library for skolemising (or canonicalising) blank node labels in RDF graphs

rdf.sh

A multi-tool shell script for doing Semantic Web jobs on the command line

QuitStore

Quads in Git - Distributed Version Control for RDF Knowledge Bases

QuitDiff

Git diff into SparQL / Eccrev vocabulary

A version control system for RDF datasets

An application development platform for Microsoft .NET and Mono. It allows to easily build Linked Data and Semantic Web applications based on RDF

Wings

A workflow system

rww-play

An implementation in Play of a number of tools to build a Read-Write-Web server using Play2.x and akka

prissma-studio

PRISSMA Studio: a web application to create Prisms, context-aware presentation metadata for Linked Data visualization

lodspeakr

Framework to create Linked Data-based applications

comunica

Flexible meta query engine for the Web

ImageSnippets is a complete metadata editing interface that enables someone who knows little to nothing about RDF, OWL, ontologies, or even URIs to create descriptions for images using Linked Data which is written in RDF

A full-stack platform for building adaptive component-based Linked Data applications in NodeJS and React

LDIF

Linked Data Integration Framework

pyLDAPI

A Python -based API framework for Linked Data via the W3C's

Chimera

A framework providing Apache Camel components to support data conversion to/from RDF and service integration with RDF graphs

tawny-owl

Build OWL Ontologies in a Programmatic Environment

Widoco

A Wizard for documenting and publishing ontologies on the Web

sesame-vocab-builder

Sesame Vocab Builder provides a command line tool that allows to create constants for RDF primitives for a given namespace out of RDF ontology files

qonsole

A simple console for running SPARQL queries and displaying results

ntcat

Command line tool for concatenating NTriples documents

ripple

Semantic Web scripting language

schema_salad

Semantic Annotations for Linked Avro Data

RDFConvert is a simple command-line tool for converting RDF file betweeen different syntax formats

ont-converter

Written in Kotlin, a simple command-line utility to convert any RDF graph to OWL2 ontology

Bubastis

Tool for detecting asserted logical differences between two ontologies, such as between versions

grlc

Web APIs from SPARQL queries

Browser extension for Google Chrome, Microsoft Edge, Mozilla Firefox, Opera, and Vivaldi that unveils structured metadata embedded within HTML documents and web pages

ShacShifter

Shapes Constraint Language (SHACL) to various other format

namespace lookup for RDF developers

rdf2rdf

Tool for converting between different RDF serialization formats

Web-Client

Generic Linked Data browser and UX component framework

Center for Expanded Data Annotation and Retrieval offers full life cycle management for semantically linked metadata

OnToology

A system for collaborative ontology development. Given a GitHub repository with an OWL file, OnToology will survey it and produce diagrams, a complete documentation and validation based on common pitfalls

OBA

Automatically create OpenAPI specifications from OWL and launch a server that serves JSON objects according to your ontology

( ) - A tool to extract metadata (and textual content) from various file formats, as JSON objects

pyLODE

A Python -based implementation of the ontology documentation tool

UnSHACLed

A visual editor for RDF constraints currently supporting the visual notations ShapeUML and ShapeVOWL and import/export/validation of SHACL constraints

rpt

Command line interface based RDF Processing Toolkit to run sequences of SPARQL statements ad-hoc on RDF datasets with a lot of features

Browser based aggregation of multiple semantic web tools, includes syntax validation, visualization, reasoner and shacl validation

An API and Web application for extracting subgraphs of interest from Wikidata based on user-input seed entities, to bootstrap new KGs or support knowledge extraction, or knowledge mining approaches

anthelion

A plugin for Apache Nutch to crawl semantic annotations within HTML pages

SolRDF

An RDF plugin for Solr

sesame-spring

Spring integration for OpenRDF/Sesame

HydraBundle

Symfony2 bundle which shows how easily Hydra can be integrated in modern Web frameworks

SARQ

Free Text Indexing for SPARQL using a remote Solr server

EARQ

EARQ is a combination of ARQ and ElasticSearch

sesametools

A collection of utilities for use with OpenRDF Sesame

Imperium

Imperium is a plugin for the Play! framework similar to the existing JPA plugin that allows the use of Empire seamlessly in a Play! based application

jekyll-rdf

A Jekyll plugin for including RDF data in your static site

RightField

RightField is an open-source tool for adding ontology term selection to Excel spreadsheets

An Ecosystem of User-facing Microservices supported by Semantic Models

LinkedPipes-ETL

Linked Data ETL pipeline

gm-sparql

Graph Mining Using SPARQL

Scalable Semantic Analytics Stack

tdbloader4

Prototype to show how TDB indexes can be generated using MapReduce

jena-grande

Jena Grande is a collection of utilities, experiments and examples on how to use MapReduce, Pig, HBase or Giraph to process data in RDF format

mrlin

MapReduce processing of Linked Data

infovore

RDF-Centric Map/Reduce Framework and Freebase data conversion tool

FOX

Federated Knowledge Extraction Framework

Duke

Duke is a fast and flexible deduplication engine written in Java

ODCS

The tool uses data processing pipelines for obtaining, processing, and storing RDF data

etalis

Event Processing SPARQL (EP-SPARQL)

graph-pattern-learner

Evolutionary Graph Pattern Learner that learns SPARQL queries for a given set of source-target-pairs from an endpoint

OntoGPT

Tools for populating semantic schemas from unstructured text using Large Language Models (LLMs)

sieve

Linked Data Quality Assessment and Fusion

RDF::Tabular

Ruby gem to parse CSV or other Tabular Data into RDF and JSON

csvlint

Ruby gem to validate CSV files to check their syntax and contents

csv2rdf (clojure)

Clojure library and application for converting CSV to RDF

csv2rdf (ruby)

Ruby gem to convert CSV to RDF

csv2json

Ruby gem to convert CSV to JSON

COW

Python package to convert CSV to RDF with nanopublications

csvw-parser

Python package to parse CSVW

csvwr

R package for reading and writing CSVW tables and metadata

rcsvw

R package that implements the candidate recommendations from the W3C CSV on the Web Working Group

table2qb

A generic pipeline for converting tabular data into rdf data cubes using csvw

xwiki

Xwiki related code for WebID

TopQuadrant/shacl

SHACL API in Java based on Apache Jena

pySHACL

A Python validator for SHACL

Form Builder

Schímatos

A SHACL-based Web-Form Generator for Knowledge Graph Editing

A web based SHACL validator

iQvoc

SKOS(-XL) Vocabulary Management System for the Semantic Web

($)

Skosprovider provides an interface that can be included in an application to allow it to talk to different SKOS vocabularies

($)

askos

A SKOS browser and editor

VocPrez

A Linked Data API for SKOS data presentation

a machine reader for the Semantic Web

NLP Interchange Format

The Lexicon Model for Ontologies

Predicate Model for Ontologies (PreMOn) - VerbNet ontology module

( ) - A tool that automates the extraction of categorised named entities from the unstructured information encoded in the source documents, using diverse NLP tools and NER models

awesome-ontology

Similar to this list

LoRiS

generated natural-language representations of SPARQL queries over Wikidata and DBpedia

Real-time information sharing component using RDF and conflict-free replicated data types (CRDTs)

n3pygments

Pygments lexer to perform syntax highlighting for N3, Turtle and SPARQL

levelgraph-n3

LevelGraph plugin for storing N3/Turtle/RDF data

psps

Personal Structured Publishing Space

swrlapi

The SWRLAPI is a Java API for working with the OWL-based SWRL rule and SQWRL query languages. It includes graphical tools for editing and executing rules and queries

cp-common-utils

Collection of utilty classes from Clark & Parsia

Git2PROV

Unleash the potential of Git in the new W3C standard for provenance

rdf3x_path

RDF3X with path queries

jqudt

Java library for working with the QUDT ontology and data using it

JenaSecurity

Security (Permissions) wrapper around Jena RDF implementation

specgen

Modified, extended and more generalized version of Danbri‘s SpecGen version 5

cassa

SPARQL 1.1 Graph Store HTTP Protocol implementation with plugable backends

keygenapp

Utilities and WebApp for certificate creation within a browser, for FOAF+SSL

owlapitools

Set of independent add-ons for OWL API

LD-FusionTool

Data Fusion & Conflict Resolution tool for Linked Data

prefix.cc

Source code to the prefix.cc website

LSD-Dimensions

All dimension values of Linked Statistical Data

prissma

Context-Aware Adaptation for Linked Data

fox-java

Java bindings for FOX - Federated Knowledge Extraction Framework

fox-py

Python bindings for FOX - Federated Knowledge Extraction Framework

fox-ui

Web UI for FoxPSL

ORE

Ontology Repair and Enrichment

signal-collect-torque

Support for Signal/Collect Torque deployment

redland-bindings

Redland librdf language bindings

mediation

Jena based framework to implement ontological mediation of SPARQL queries

SemanticPingback

This small vocabulary defines resources which are used in the context of Semantic Pingback

json-ld-macros

Declarative transformation of JSON APIs into JSON-LD

tac

Triple access control

An extension to Google Refine that enables graphical mapping of Google Refine project data to an RDF skeleton and then exporting it in RDF format

LD-FusionTool

Data Fusion & Conflict Resolution tool for Linked Data

xodx

An implementation of Semantic Pingback and PuSH for a DSSN

morph-starter

this project is a simple Java (and Scala) demo of how to use morph

sesametools

A collection of utilities for use with OpenRDF Sesame (as of recently, Eclipse RDF4J)

DEER

RDF Dataset Enrichment Framework

levelgraph-jsonld

The Object Document Mapper for LevelGraph based on JSON-LD

OWL-API

The OWL API is a Java API for creating, manipulating and serialising OWL Ontologies

ONT-API

a Jena based OWL-API implementation (Java library)

rdf-protege

a Protege Desktop fork with RDF support

concurrent-rdf-graph

Concurrent RDF Graph implementations written in Kotlin

LODGrefine

LOD-enabled Google Refine: linked open data related extensions included

cp-openrdf-utils

Utility classes for working with the OpenRdf API

linked-csv

A souped-up CSV-based data format

balloon

A tool-suite for Linked Data consumption. balloon aims in offering public services and tools to take advantage of the semantic web with less effort. The basic motivation is to establish a foundation for Linked Data as a Service (LDaaS)

grlc

Translates public SPARQL queries into Linked Data APIs automatically

basil

Building Apis SImpLy from sparql endpoints

lodmill

Blend, grind, and enjoy LOD – fresh from the mill!

module-extractor

Java-based module extractor for OWL ontologies

iRap

iRap - Interest-based RDF update propagation framework

turtle-in-html

Bookmark to visualize RDF embedded in HTML as Turtle

semargl

Highly performant, lightweight framework for linked data processing. Supports RDFa, JSON-LD, RDF/XML and plain text formats, runs on Android and GAE, provides integration with Jena, Sesame and Clerezza

owlconvert

Simple OWL format converter based on OWLAPI

rabel

Program for reading and writing linked data in various formats

csvw-template

Document the semantics of your csv file

jsonld-java

JSON-LD implementation for Java

Luzzu

A scalable and extensible Linked Data quality assessment framework

odmtp-tpf

Triple pattern matching over non-RDF datasources with inference

Music ontology tools

rdfsurveyor

Exploration tool for RDF datasets

fenster

RDF quad-store frontend

jsonld-streaming-parser.js

A fast and lightweight streaming JSON-LD parser for JavaScript

rollxx/manchester-syntax-owl2

ANTLR grammar for simplified Manchester Syntax OWL2

rollxx/antlr-sparql-grammar

sparql 1.1 antlr grammar

sparql-ld

SPARQL-LD: A SPARQL Extension for Fetching and Querying Linked Data

jena-sparql-api

A collection of Jena-extensions for hiding SPARQL-complexity from the application layer

nichtich/wdg

Command line interface to Wikidata Query Service

vocol

An integrated environment to support collaborative ontology / vocabulary development in distributed settings

psps

Personal Structured Publishing Space

The Computer Science Ontology (CSO) is a large-scale ontology of research areas that was automatically generated using the Klink-2 algorithm on the Rexplore dataset, which consists of about 16 million publications, mainly in the field of Computer Science

The model-driven linked data platform

OLGA (Ontology Library GenerAtor) is a generic tool aiming to accelerate the adoption of Standard W3C Semantic technology among developers

Glimmer

An RDF Search Engine

ontodia

Ontodia data diagraming library

rdf.sh

A multi-tool shell script for doing Semantic Web jobs on the command line

yarrrml-parser

A YARRRML parser library and CLI in Javascript

amazon-neptune-tools

Tools and utilities to enable loading data and building graph applications with Amazon Neptune

sparql-ld

SPARQL-LD: A SPARQL Extension for Fetching and Querying Linked Data

genealogical-trees

Semantic Web Exercise: Reasoning and Visualization of the Genealogical Ontologies

LodLive

browse the web of data - a SPARQL navigator

fbrs

Facebook RDF Sync

ostrich

-Versioned RDF triple store (Offset-enabled TRIple store for CHangesets)

ontmalizer

A tool that performs comprehensive transformations of XML Schemas (XSD) and XML data to RDF/OWL automatically

NSpM

robot Neural SPARQL Machines translate natural language into SPARQL queries

ML-Schema/core

CORE ontology of ML-Schema schema. It's the mapping to others machine learning vocabularies and ontologies (DMOP, Expose, OntoDM and MEX)

rocker

key A Refinement Operator Approach for Key Discovery

Mandolin

sparkle Markov Logic Networks for the Discovery of Links

docker2rdf

Mapper to represent Dockerfiles as RDF triples

vsb

Visual SPARQL Builder - Model SPARQL-Select-Queries in a browser

sparti

SPARTI - RDF Semantic Partitioning

carml-cli

Interface for CARML library

OME

Online Mapping Editor

Linked-Data-Studio

The Linked Data Studio is an extension to the Linked Data Theatre for the creation of Linked Data

canonical_rdf

Proof-of-concept implementation of Aidan Hogan's RDF canonicalization algorithm in node.js

Linked-Data-Theatre

The Linked Data Theatre is a platform for an optimal presentation of Linked Data

SEPA

A JAVA implementation of the SPARQL Event Processing Architecture including the engine, APIs and tools

GLEEN

Regular Paths for ARQ SparQL

PSPARQL (for Path SPARQL) is a query language for RDF

rdf2h

Render resources described in RDF using logicless templates

Beast

Benchmarking, Evaluation, and Analysis Stack - A powerful yet lightweight Java8/Jena-based RDF processing stack

basil

Building Apis SImpLy from sparql endpoints

profilechecker

OWL API profile checker

Software Package Data Exchange® (SPDX®) is an open standard for communicating software bill of material information (including components, licenses, copyrights, and security references)

CostFed

Cost-Based Query Optimization for SPARQL Endpoint Federation

sparql-ld

SPARQL-LD: A SPARQL Extension for Fetching and Querying Linked Data

vocol

An integrated environment to support collaborative ontology / vocabulary development in distributed settings

sparql-to-csv

Stream SPARQL results to CSV

knowledgecubes

Efficient RDF Data Management over Spark

PREdicate Model for ONtologies

eso-and-ceo

Event and Implied Situation Ontology (ESO) and the Circumstantial Event Ontology for Calamities (CEO)

Pikes is a Knowledge Extraction Suite

rdfpro

an extensible tool for building stream-oriented RDF processing pipelines

umls2rdf

These python scripts connect to the Unified Medical Language System (UMLS) database and translate the ontologies into RDF/OWL files. This is part of the BioPortal project

ROBOT is a command line tool for working with Open Biomedical Ontologies

SEPA

A JAVA implementation of the SPARQL Event Processing Architecture including the engine, APIs and tools

solr-ontology-tagger

Automatic tagging and analysis of documents in an Apache Solr index for faceted search by RDF(S) Ontologies & SKOS thesauri

kbpedia

KBPedia Knowledge Graph & Knowledge Ontology (KKO)

Khoaos Research Group

Tractable OWL 2 Reasoning Infrastructure

RDF4J for Android

a highly modular framework that combines various validation, normalization and transformation algorithms that enable the translation of ontology descriptions in WSML to the appropriate syntax of several underlying reasoning engines

Semantic Inferencing on Large Knowledge (SILK) knowledge representation system

Rule-Translator

This is framework is a Web rule translator. It has a rule parser, visualizer and translator. The Web rule languages that are covered by this framework include: Notation3 (N3), POSL, Datalog RuleML, SWRL and RIF. This framework is a rule engine for RIF language as well

SWRLRulesToOWLAxioms

Implementation of a procedure to transform SWRL rules into equivalent OWL axioms

SWRL.js

A SWRL parser for Javascript

rdfpro

a public domain, Java command line tool and library for RDF processing

basex-rdf

RDF parsing for BaseX

java-skos-api

The SKOS API provides a Java interface and OWL API based implementation of the Simple Knowledge Organisation System (SKOS)

forgefed

An extension to ActivityPub for web-based Git services federation