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Litmaps vs Open Knowledge Maps: catalog facts
Litmaps	Open Knowledge Maps
Freemium Free sign-up with paid plans for more features.	Free Free to use; run by a non-profit funded by supporting members.
Web	Web
Visual citation maps from seed papers Alerts for new papers on a topic	Visual overview of a research topic Very large index of open research outputs
Not usable for building maps on small phone screens Advanced features are on paid plans	AI mapping is still in beta Maps are built from metadata, not full text
Web application	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 26, 2026	Official website Full listing and sources Checked September 26, 2026

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