COmmon Semantic MOdel
Foundation ontology for broad general semantic interoperability across heterogeneous knowledge domains.
Visit WebsiteBrowse the tree, filter it, or click any class to see just its corner of it.
Where this one tends to earn its keep.
Cross-domain semantic interoperability
Knowledge integration frameworks
Ontology alignment foundation
Multi-domain data harmonization
I haven't checked this label against the actual licence text — it's the catalogue's original guess. Check the ontology's own site before you rely on it.
Others worth a look in Foundational.