open-ontologiesKnowledge & MemoryDatabasesDeveloper Toolsfabio-rovaiAlicenseAqualityAmaintenanceAI-native ontology engineering MCP server for OWL/RDF/SPARQL. Validate, query, diff, lint, version, and govern knowledge graphs via Oxigraph triple store. Updated 18 hours ago (2026-10-30 22:22 UTC)422,470MIT