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

The context development platform. Store, enrich, and retrieve structured knowledge with graph-native infrastructure, semantic retrieval, and portable context cores.

A distributed knowledge graph store

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

SPARQL graph database

Apache Jena, A free and open source Java framework for building Semantic Web and Linked Data applications.

Blazegraph High Performance Graph Database

Virtuoso is a high-performance and scalable Multi-Model RDBMS, Data Integration Middleware, Linked Data Deployment, and HTTP Application Server Platform

Ontop is a platform to query relational databases as Virtual RDF Knowledge Graphs using SPARQL

Graph database implementing the RDF and SPARQL standards. Very fast and scales to more than a trillion triples on a single commodity machine

Library extending Jupyter notebooks to integrate with Apache TinkerPop, openCypher, and RDF SPARQL.

INCEpTION provides a semantic annotation platform offering intelligent annotation assistance and knowledge management.

Graph Data Science: an abstraction layer in Python for building knowledge graphs, integrated with popular graph libraries – atop Pandas, NetworkX, RAPIDS, RDFlib, pySHACL, PyVis, morph-kgc, pslpython, pyarrow, etc.

The low-code Knowledge Graph application platform. Apache license.

EasyRdf is a PHP library designed to make it easy to consume and produce RDF.

Information Integration Tool

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

Grafeo is a pure-Rust, high-performance graph database that can be embedded as a library or run as a standalone database, with optional in-memory or persistent storage. Grafeo supports both LPG and RDF and all major query languages.

A wrapper for a remote SPARQL endpoint

(subjective) overview of projects which are related both to python and semantic technologies (RDF, OWL, Reasoning, ...)