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

A wrapper for a remote SPARQL endpoint

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.

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