OWLIM

OWLIM http://ontotext.com/owlim/ is a rule engine with RDFS/OWL support.

OWLIM is a high-performance semantic repository developed in Java. It is packaged as a Storage and Inference Layer (SAIL) for the Sesame RDF framework. OWLIM is based on TRREE – a native RDF database and rule-entailment engine.