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Semantic Scholar vs Open Knowledge Maps: catalog facts
Semantic Scholar	Open Knowledge Maps
Free Free to use in the browser.	Free Free to use; run by a non-profit funded by supporting members.
Web, Browser extension	Web
Index of more than 238 million papers across all fields of science Free to search without cost	Visual overview of a research topic Very large index of open research outputs
Semantic Reader is in beta and only available for select papers Web only, with no offline use	AI mapping is still in beta Maps are built from metadata, not full text
Web application, Browser extension	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.