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A java-swing application that provides a tree-view of a jena rdf-graph.
This is a tool for developers utilizing jena or pellet who wish to see what is going on within their jena-model when inference occurs.
JNOMO is a Jean Plugin for providing more expresiveness in its rule language. This plugin allows for retracting or priorizing rules, removing facts as a rule consecuence or even asking for the "unspecified" information into Knowledge Base.
OntoBridge is a java library that eases the management of ontologies. It is based on Jena, uses simple textual identifiers to work with the ontology elements, loads local/online OWL ontologies, supports Pellet/DIG, and includes several examples.
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mRDP (Multicast Resource Discovery Protocol) API is a Java API that enables RDF resource discovery via SPARQL queries over UDP multicast messages. The mRDP API uses the Jena API for managing the RDF graph and SPARQL queries execution.