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Ask about or discuss RDF4J

RDF4J Github Discussions is the best place to ask questions, propose new ideas or discuss other issues related to RDF4J.

You can also find us on Gitter, if you prefer an instant messaging style of communication. However, we make no promises that any of the RDF4J developers will be online at any given time.

We previously used a Google group called rdf4j-users. This group has now been archived. You can still browse the archive, but no new posts will be accepted.

The RDF4J development team uses the mailinglist to discuss development progress.

Reporting bugs and requests for improvement

If you think you’ve found a bug in RDF4J, or wish to log a request for a new feature or improvement, please use the RDF4J issue tracker. Before you add your new issue, though, please have a look around to see if it’s not already there.


Eclipse RDF4J™ is a powerful Java framework for processing and handling RDF data. This includes creating, parsing, scalable storage, reasoning and querying with RDF and Linked Data. It offers an easy-to-use API that can be connected to all leading RDF database solutions. It allows you to connect with SPARQL endpoints and create applications that leverage the power of linked data and Semantic Web.

RDF4J Architecture

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