Top 103 semantic-web open source projects

PHP implementation of a JSON-LD Processor and API

Eclipse RDF4J: scalable RDF for Java

Linked Data & RDF Manufacturing Tools in Clojure

TopicDB is a topic maps-based semantic graph store (using PostgreSQL for persistence)

KBPedia Knowledge Graph & Knowledge Ontology (KKO)

A tool for supervised Machine Learning in OWL and Description Logics

Ontology for the description of human clinical features

Free and open source A.I. system based on Python, TensorFlow and Prolog.

GraphQL interface for querying and serving linked data on the Web.

GraphQL interface for querying and serving linked data on the Web.

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

RDFLib is a Python library for working with RDF, a simple yet powerful language for representing information.

Generic Linked Data browser and UX component framework. Apache license.

Wandora is a general purpose information extraction, management and publishing application based on Topic Maps and Java.

Chinese Open Information Extraction (Tree-based Triple Relation Extraction Module)

Link Discovery Framework for Metric Spaces.

A curated list of Clojure resources for dealing with graph-like data.

Metadata and website for the Open Bio Ontologies Foundry Ontology Registry

A JSON-LD Processor and API implementation in JavaScript

Apache Anything To Triples (Any23) is a library, a web service and a command line tool that extracts structured data in RDF format from a variety of Web documents.

Lightweight and friendly .NET library for modeling Semantic Web applications

A curated list of various semantic web and linked data resources for heritage, humanities and art history practitioners.

Converts GraphQL queries to SPARQL queries

Surfacing Semantic Data from Clinical Notes in Electronic Health Records for Tailored Care, Trial Recruitment and Clinical Research

A lightweight C library for RDF syntax

For finding, sharing and exchanging Data, Models, Simulations and Processes in Science.

The Information Model of the International Data Spaces implements the IDS reference architecture as an extensible, machine readable and technology independent data model.

Contextualise is a simple but effective tool particularly suited for organising information-heavy projects and activities consisting of unstructured and widely diverse data and information resources

Method for drug repurposing from knowledge graphs and literature

DBpedia Spotlight is a tool for automatically annotating mentions of DBpedia resources in text.

A curated list of various semantic web and linked data resources.

💡 dokieli is a clientside editor for decentralised article publishing, annotations and social interactions

Extract embedded metadata from HTML markup

JSON-LD processor written in Python

🔗 Semantic MediaWiki turns MediaWiki into a knowledge management platform with query and export capabilities

RDF.rb is a pure-Ruby library for working with Resource Description Framework (RDF) data.

JSON-LD TypeScript types for Schema.org vocabulary

RSS as RESTful. This service allows you to transform RSS feed into an awesome API.

JSON-LD processor for PHP

Type-checked Schema.org JSON-LD for React

A question answering system for RDF knowledge graphs.

The Ontology for Biomedical Investigations

Storing ontologies/vocabularies from the web. Wish anybody can translate some of them.

The Knowledge Graph notebook. Apache license.

Linked SPARQL Queries (LSQ): Framework for RDFizing triple store (web) logs and performing SPARQL query extraction, analysis and benchmarking in order to produce datasets of Linked SPARQL Queries

An ontology of cell types

PheKnowLator: Heterogeneous Biomedical Knowledge Graphs and Benchmarks Constructed Under Alternative Semantic Models

Document RDFizer for CouchDB

Stylizer is a flexible Css framework based on the visual aspect, the framework offers you a clean and easy work.

A curated list of ontology things

SPARQL micro-services: A lightweight approach to query Web APIs with SPARQL

Global Change Information System

💠 Ontology matching system based on formal concept analysis

Streaming, transforming, SPARQL-based CSV to RDF converter. Apache license.

🕸 YALC: Yet Another LOD Cloud (registry of Linked Open Datasets).

Publishing Big Geospatial data as Linked Open Geospatial Data

Get notifications about changes in your SPARQL endpoint.

Linked Open Data EXperiment

Semantic Body Browser - a tool for graphically exploring an organism's body.

ONT-API (OWL-API over Apache Jena)