ConceptNet 5
Open multilingual knowledge graph of common sense knowledge in 73 languages. Powers ConceptNet Numberbatch embeddings.
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.
Common sense reasoning for AI/chatbots
Enhance word embeddings with relational knowledge
Sentiment analysis enrichment
Multilingual concept linking
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 Knowledge Graphs.