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Jena

Java toolkit for Semantic Web data processing

• http://jena.sourceforge.net/

Overview

(From: http://jena.sourceforge.net/)

Jena is a Java framework for building Semantic Web applications. It provides a programmatic environment for RDF, RDFS and OWL, SPARQL and includes a rule-based inference engine.

Jena is open source and grown out of work with the HP Labs Semantic Web Programme.

The Jena Framework includes:

• A RDF API
• Reading and writing RDF in RDF/XML, N3 and N-Triples
• An OWL API
• In-memory and persistent storage
• SPARQL query engine

Related tools

• http://jena.hpl.hp.com/wiki/SDB - relational database RDF storage and query, specifically to support SPARQL.
• http://www.joseki.org/ - A SPARQL Server for Jena.
• http://sites.wiwiss.fu-berlin.de/suhl/bizer/d2r-server/ - D2R server: Publishing Relational Databases on the Semantic Web