Awesome Semantic Web

Format	Description	Mime-type
Turtle	Terse RDF Triple Language.	`text/turtle`, `application/x-turtle`
TriG	Plain text format for serializing named graphs and RDF Datasets.	`application/trig`, `application/x-trig`
JSON-LD	JSON-based Serialization for Linked Data.	`application/ld+json`
RDF/JSON	RDF 1.1 JSON Alternate Serialization.	`application/rdf+json`
N-Triples	Line-based syntax for RDF datasets.	`application/n-triples`
N-Quads	Line-based syntax for RDF datasets.	`application/n-quads`, `text/x-nquads`, `text/nquads`
Notation3	Notation3 (N3): A readable RDF syntax.	`text/n3`, `text/rdf+n3`
RDF/XML	RDF/XML Syntax Specification.	`application/rdf+xml`, `application/xml`
TriX	RDF Triples in XML.	`application/trix`
HDT	Binary RDF Representation for Publication and Exchange.	`application/x-binary-rdf`
aREF	Another RDF Encoding Form.

Companies

Stardog Union - Knowledge Graph Platform for the Enterprise.
Epimorphics
Franz
PoolParty
Cambridge Semantics
Oxford Semantic Technologies
Capsenta
Zazuko

Databases

$ - Proprietary
OS - OpenSource
F - Free

Jena TDB - (OS).
Ontotext GraphDB™ - ($/F).
Halyard - (OS).
Stardog - ($/F).
Strabon
Systap Blazegraph™ - ($/OS).
- docker-blazegraph
- blazegraph-samples
- docker-blazegraph
- blazegraph-service
Marklogic - ($).
Virtuoso - ($/OS).
- virtuoso-opensource
Oracle - ($).
Allegrograph - ($/F).
BrightstarDB - (OS) A native RDF database for the .NET platform written in C#.
CM-Well - (OS).
Apache Rya - (OS).
4Store - (OS).
Mulgara - (OS).
Parliament - (OS).
wallix/triplestore - (OS) Nifty library written in Go-Lang.
SANSA - (OS).
hbase-rdf - (OS).
Anzograph
CumulusRDF
Sempala
TriplePlace - Light weight and flexible Triple Store for Android.
Node-Quadstore - (OS) A LevelDB-backed graph database for Node.js supporting quads, SPARQL queries and the RDF/JS interface.
KGRAM - (OS).
luposdate - (OS) Semantic Web database.
wallix/triplestore - Nifty library to manage, query and store RDF triples.
levelgraph - (OS) Graph database JS style for Node.js and the Browser.
Oxford Semantic RDFox - ($) Horizontly scalalbe in-memory triple store with parallel Datalog reasoning.
gStore - (OS).

Academic

TripleRush - (OS).
Corese - (OS).
rdf3x - (OS).
gh-rdf3x - (OS).
rdf3x-mpi
Qamel - RDF4J ported to Andriod.
dipLODocus
SW-Store
Yars2
Shard
Hexastore
BitMat
LUPOSDATE
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.

Ecosystem

Conferences

Blogs

Podcasts

TODO

Meetups

TODO

Groups

Academic Journals

Research Institutions

The Smart Data Analytics (SDA) - 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.
Agile Knowledge Engineering and Semantic Web (AKSW) - 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).
University of Zurich Dynamic and Distributed Information Systems Group
WESO - WESO is a research group at the University of Oviedo founded in 2004.
Max Planck Institute for Informatics - Department D5 of the Max Planck Institute for Informatics.
DICE: Data Science Group - Universität Paderborn.
Ontology Engineering Group (OEG) - The Ontology Engineering Group (OEG) is based at the Computer Science School at Universidad Politécnica de Madrid (UPM).
Knowledge Representation and Reasoning Group (KRR) - Research group is based at the Vrije Universiteit Amsterdam (VU).

Follow

Knowledge Graph Management

$ - Proprietary
OS - OpenSource

Metaphacts - ($) End-to-end platform to create and utilize enterprise knowledge graphs.
OntoWiki - (OS) Semantic data wiki as well as Linked Data publishing engine.
GNOSS-Sherlock - ($) Cognitive Intelligence tool for machines to understand us.

SPARQL Implementations

Streaming SPARQL

CSPARQL-engine
Triplewave
morph-streams
Katts
WAVES
Strider
cqels
morph - Sparql-stream sensor queries.
morph-web
sepa - A JAVA implementation of the SPARQL Event Processing Architecture including the engine, APIs and tools.

Federated SPARQL

ACTIVE

Semagrow
CostFed
QUETSAL
SPLENDID
ANAPSID
HiBISCuS
SPARQLFederator
rdffederator
Avalanche
FedX
anapsid - An adaptive query processing engine for SPARQL endpoints.
luposdate - A Semantic Web Database Management System developed by IFIS at the University of Lübeck.

ARCHIVE - inactive projects or old academic projects that may lack soruce code

SemWIQ
DARQ

SPARQL Applications

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.
sparql2xquery - SPARQL to XQuery Translator for use with MarkLogic Semantic Toolkit.
SparqlAnalytics
decentsparql
sparqled
SPARQL2NL
sparql-proxy
AutoSPARQL
YASGUI - Yet Another Sparql GUI.
YASGUI.legacy
pubby - A Linked Data frontend for SPARQL endpoints.
fluent-sparql
FlintSparqlEditor
reactive-sparql
sparql-transformer
spanqit - Java-based SPARQL query generator.
squebi - Squebi is a SPARQL editor and SPARQL result visualizer.
zeppelin-sparql - Zeppelin sparql interpreter.
SAFE
Sparql-cli - Command line API for SPARQL.
snap-sparql-query
Trifid - Lightweight Linked Data Server and Proxy
asqc - SPARQL query client (pronounced "ask").
SPARQL-parser
antlr-sparql-grammar
visu - Visual SPARQL query tool.
Porthole - Mac SPARQL editor and client.
datastudio-sparql-connector - SPARQL Connector for Google Data Studio.

Linked Data Platform (LDP)

fedora - 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.
LDP4j
gold - Linked Data server for Go.
CarbonLDP
trellis

Web Annotations

Mapping

Geo

geometry2rdf
TripleGeo - TripleGeo utility for converting geospatial data into triples.

Excel

CSV/Tabular

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
csv2rdf4lod-automation
tarql-component
tarql

Object to RDF Mapping

Empire
Pinto
Som(m)er
jennabean
Alibaba
rdfbeans
surfrdf - SuRF: a python Object RDF Mapper (ORM).
jtriple - A Java object model binding for RDF.

RDB to RDF

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.

XML

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

R2RML

R2RML-Parser - An R2RML implementation that can export relational database contents as RDF graphs.
Morph-RDB - An R2RML processor.
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.
db2triples - Antidot implementations of R2RML and Direct Mapping specifications.
ADAPT-R2RML
R2RML-api
R2RML-kit
Juma - 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.
sparqlmap
rdf2rml - R2RML Generation from simple examples.
ultrawrap

xR2RML

R2RML-f

RML

RML - RDF Mapping language for mapping JSON, CSV and XML to RDF.
CARML - CARML RML engine for mapping CSV, XML and JSON files to RDF

Other RDF Mappings

Ontologies

World Wide Web Consortium (W3C)

WGS84 - Basic Geo (WGS84 lat/long) Vocabulary.
skos - SKOS Simple Knowledge Organization System.
skos-xl - SKOS Simple Knowledge Organization System eXtension for Labels.
vcard - vCard Ontology - for describing People and Organizations.
void - Describing Linked Datasets with the VoID Vocabulary.
time - Time Ontology in OWL.
org - The Organization Ontology.
data-cube - The RDF Data Cube Vocabulary.
pim
dqv - Vocabulary for describing quality metadata.
PROV-O - Represent provenance information.

Common

foaf - Friend of a Friend (FOAF) ontology.

Community

uberon - Integrated cross-species ontology covering anatomical structures in animals.
juso-ontology - Vocabulary for describing geographical addresses and features.
obo-relations - Relation Ontology. Relationship types shared across multiple ontologies.
orderedlistonto - The Ordered List Ontology.
evidenceontology - EVIDENCE & CONCLUSION ONTOLOGY.
bevon - 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.
schema.org - Structured data on the Internet (Google, Microsoft, Yahoo and Yandex).
SPAR - Semantic Publishing and Referencing Ontologies.
BFO - Basic Formal Ontology.
VIVO ISF - Researchers and the full context in which they work.

Educational

MMOntologies - Multimedia ontologies studied for the paper "The Landscape of Multimedia Ontologies in the last Decade".
Wine - Wine Ontology is a popular example of an OWL ontology.
Pizza - A step-by-step guide to modelling in OWL using the popular Protégé OWL tools.

Books

Ontology Development

protégé - 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.

Reasoners

Benchmarks

Berlin SPARQL Benchmark (BSBM)
Lehigh University Benchmark (LUBM)
IGUANA
dice-group/triplestore-benchmarks - An Evaluation of Triplestore Benchamrks.
RdfStoreBenchmarking
Hobbit - Holistic Benchmarking of Big Linked Data.
SP2Bench
IGUANA - IGUANA is a benchmark execution framework for triple stores.

Programming

Java

RDF4J
Jena
commons-rdf
foafssl-java
soarql-dl-api - A query engine for SPARQL-DL.
nxparser - Java parsers for different RDF serialisations + API + tools + JAX-RS integration.

Python

RDFlib - Pythonic RDF API.
SPARQLWrapper - A wrapper for a remote SPARQL endpoint.
sparql-client - Python API to query a SPARQL endpoint.
RdfAlchemy
Fuxi - Bi-directional logical reasoning system for the semantic web.
pySHACL - A Python validator for SHACL.
PyShEx - ShEx interpreter for ShEx 2.0.
ORDF
Django-rdf - An RDF engine for Django projects.
Djubby - Linked Data frontend for SPARQL endpoints for Django.
SuRF
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.

C

serd - Lightweight C library for RDF syntax.
librdf - Redland librdf RDF API and triple stores.
raptor - Redland Raptor RDF syntax library.
rasqal - Redland Rasqal RDF Query Library.

JavaScript

js3
rdfstore-js
rdf-ext
N3.js
Jessa
RDFJS - Github Organization that maintains modern JavaScript RDF libraries based on open, maintained standards
rdf.js
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.
RDForms - Construct form-based RDF editors in a web environment.

C#

Go-Lang

knakk/rdf
rdf2go - Native golang library for RDF.
knakk/rdf - RDF library for Go.

PHP

Clojure

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.

Scala

banana-rdf - A library for RDF, SPARQL and Linked Data technologies in Scala.
jvmrdftools
SANSA-RDF - Library to read RDF files into Spark or Flink.

Swift

swift-sparql-syntax - SPARQL 1.1 Parser.
URITemplate - Swift implementation of URI Template (RFC6570).
swift-serd - Swift package wrapper for the Serd RDF library.
kineo - A SPARQL endpoint and quadstore written in Swift.
swift-hdt - An HDT RDF Parser.

ObjectiveC

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

Prolog

SWI-Prolog Semantic Web Library

Perl

Haskell

OCamel

ocaml-rdf - Manipulate RDF graphs and execute Sparql queries.

Editors

VIM

sparql.vim - SPARQL syntax highlighting.
vim-sparql
semweb.vim

Emacs

sparql-mode

IntelliJ

sparql4idea - SPARQL language plugin for IntelliJ IDEA.

Geo

Visualization

Visual SPARQL Builder
d3-sparql
SPARQLFilterFlow
VOWL - Visual Notation for OWL Ontologies.
gephi-semantic-web-import
visualRDF
rdfdot - Tools for drawing graphs from RDF files with GraphViz.
ontodia - Ontodia data diagraming library.
rdfpuml - True RDF Diagrams.

Data Cube

Datasets

DBpedia
geonames
permid - PermID: Connecting Data to the World.
wikidata - Wikidata is a free and open knowledge base that can be read and edited by both humans and machines.
lod-cloud - The Linked Open Data Cloud.

IoT

Weviate
rdfagents - Real-time messaging for the Semantic Web.

DevOps

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.
rdf-pipeline
rdfpatch
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.

Platforms

trinity - 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 - 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.

Tools

tawny-owl - Build OWL Ontologies in a Programmatic Environment.
Widoco
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.
HydraConsole
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 - RDFConvert is a simple command-line tool for converting RDF file betweeen different syntax formats.
How to diff RDF
grlc - Web APIs from SPARQL queries.
Openlink Structured Data Sniffer - 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.

Integrations

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.

Machine Learning

LinkedPipes-ETL - Linked Data ETL pipeline.
gm-sparql - Graph Mining Using SPARQL.
SANSA-Stack - 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.
singal-collect
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.

WebID

xwiki - Xwiki related code for WebID.
solid-spec
webid-demo
webid-spec
node-webid

Misc

LDIF - Linked Data Integration Framework.
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.
jena-joseki
stardog-ubuntu-scripts
Git2PROV - Unleash the potential of Git in the new W3C standard for provenance.
iqvoc - SKOS(-XL) Vocabulary Management System for the Semantic Web.
hydra-java
IntervalServer
TabLinker - Supervised Excel/CSV to RDF Converter.
jdbc-for-rdf3x
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.
graphity-browser - Generic Linked Data browser.
keygenapp
owlapitools - Set of independent add-ons for OWL API.
LD-FusionTool
fox-ui
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
fox-py
ORE
signal-collect-torque
redland-bindings
mediation - Jena based framework to implement ontological mediation of SPARQL queries.
owl-functional-syntax-axiom-parser
SemanticPingback
json-ld-macros
tac - Triple access control.
dbpedia-extension
grefine-rdf-extension
LD-FusionTool
xodx
morph-starter
sesametools
DEER
levelgraph-jsonld
owlapi - The OWL API is a Java API for creating, manipulating and serialising OWL Ontologies.
LODGrefine
stardog.js
stardog-groovy
HydraClient
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).
Processor - Generic Linked Data processor and server. Apache License.
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.
linked-csv-browser
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.
wordnet-lemon-to-w3c
hyrise
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.

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Awesome Semantic Web

Contents

Standards

RDF

RDFS

OWL

SHACL

ShEx

SPARQL

RDFa

Tabular

Linked Data Fragments (LDF)

Open Services for Lifecycle Collaboration (OSLC)

Web Annotation Data Model

Linked Data Notifications

Linked Data Platform

Data Cube extensions

Serialization

Companies

Databases

Academic

Ecosystem

Conferences

Blogs

Podcasts

Meetups

Groups

Academic Journals

Research Institutions

Follow

Knowledge Graph Management

SPARQL Implementations

Streaming SPARQL

Federated SPARQL

SPARQL Applications

Linked Data Platform (LDP)

Web Annotations

Mapping

Geo

Excel

CSV/Tabular

Object to RDF Mapping

RDB to RDF

XML

R2RML

xR2RML

R2RML-f

RML

Other RDF Mappings

Ontologies

World Wide Web Consortium (W3C)

Common

Community

Educational

Books

Ontology Development

Reasoners

Benchmarks

Programming

Java

Python

C

JavaScript

C#

Go-Lang

PHP

Clojure

Scala

Groovy

R

Ruby

Swift

ObjectiveC

Prolog

Packages