Protege
Comment Protégé allows domain experts to build knowledge-based systems by creating and modifying reusable ontologies and problem-solving methods. Protégé-2000 now has support for editing Resource Description Framework schema and instance data knowledge-bases.
Diagram Semantic Web Business Tools
Hyperlink http://smi-web.stanford.edu/projects/protege/
SuperClass RDFS Editor
reads and writes XML & RDFS
edits Ontology Layer
edits Model Layer
inv maintains a list of Semantic Web Business Special Interest Group