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ralfbecher / orionbelt-ontology-builder

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Browser-based ontology workbench for OWL ontologies and SKOS vocabularies. Streamlit + rdflib, no Java, no Protégé. Bulk operations, OWL-RL reasoning, gist upper-ontology starters, merge-aware imports, interactive vis-network graph.

python sparql rdf semantic-web owl ontology rdflib knowledge-graph skos ontology-editor rdf-graph owl-rl owl-editor streamlit semantic-modeling protege-alternative
  • Updated May 10, 2026
  • Python

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