This is another Ontology Mgmt System . Similar to the IBM SNOBASE system. Just the fact that this is open Source

KAON Ontology and Semantic Web Infrastructure – KAON Ontology and Semantic Web Infrastructure

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1. 3scale provides infrastructure of the programmable web
2. pOWL: collaborative ontology development
3. Dr. Tom Gruber — Every ontology is a treaty
4. List of Semantic web tools
5. Ontology Summit 2009: Toward Ontology-based Standards