Apache Jena

A robust Java framework for building Semantic Web and Linked Data applications using RDF, SPARQL, and OWL.

Apache Jena provides a complete stack for graph-based data modeling. It includes the TDB triple store for high-performance persistence, the Fuseki server for SPARQL over HTTP, and a comprehensive API for manipulating RDF graphs. Developers use Jena to ingest data in Turtle or JSON-LD formats and apply RDFS or OWL inference rules to uncover hidden relationships. It is the industry standard for enterprise knowledge graphs (EKGs) requiring strict W3C compliance and scalable query execution.

https://jena.apache.org/