CIDOC Conceptual Reference Model
High-level ontology for cultural heritage data using event-based modeling. ISO 21127:2023 standard.
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.
Museum collection data integration
Archaeological data management
Digital humanities linked data
Cross-institution heritage data exchange
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.