Algernon is a rule-based reasoning engine written in Java. It allows forward and backward chaining across Protege knowledge bases. In addition to traversing the KB, rules can call Java functions and LISP functions (from an embedded LISP interpreter)
OntoCardio is an initiative to build ontologies for the legacy Cardio Database (Resource of bioinformation on cardiovascular diseases). SMI's Protege and its OWL plug-in has been adopted as the ontology construction and programming framework.
A new front-end for the Protege (protege.stanford.edu) knowledge management and ontology development software that mimics the "Windows Explorer" interface to make it easier to deal with RDF and similiar "semantic web" structured data stores.