rdf4j

Official Implementation of "Affordable AI Assistants with Knowledge Graph of Thoughts"

Super-fast RDF serialization for Jena & RDF4J

an Ontology SDK

A SPARQL client for Amazon Neptune that includes AWS Signature Version 4 signing. Implemented as an RDF4J repository.

Generates RDF4J Vocabulary classes from RDFS or OWL Schemas

Java persistence with RDF

Framework and CL tools for hight throughput manipulation on RDF statements (triples and quads).

🥶👫🕸Social Knowledge Graph based on data from meetup.com to generate conversation opening iceabreakers (based on RDF(S), RML, Neo4j & other Technologies)

sempods reference implementation for the JVM — pod server, identity service, hosted MCP, clients

Master's Dissertation - FrontEnd for RDF4J

Classify Confluence pages using existing SKOS and RDFS controlled vocabularies, improve search, build better tables of contents, capture structured data alongside other content and integrate Confluence into knowledge graphs using SPARQL.

📤 Simply upload RDF to a SPARQL endpoint with RDF4J

Real-time Analytics for Gmail accounts

Little utility function that converts the table-like result of a SPARQL query into a JSON tree with a user-defined structure

SPARQL JSON Schema Linked Data Client

Project used to deploy Virtuoso database drivers to a public maven repository

Representación en RDF de datasets publicados en Open Data Euskadi referentes a la calidad del aire, retribuciones nominativas, relación de puestos laborales y estaciones metereológicas. Validación del RDF generado y enlazado de éste con información existente en la web

Maven plugin to generate RDF4J style vocabulary classes

DDD architectural models that machines can understand. W3C standards (RDF/OWL) rather than proprietary DSLs -- validatable (SHACL), queryable (SPARQL), AI-ready (MCP).

Curated list of awesome Resource Description Framework (RDF), Semantic Web, Linked Data & Knowledge Graph stuff related to Java and the JVM.