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Open Knowledge Maps vs Litmaps: catalog facts
Open Knowledge Maps	Litmaps
Free Free to use; run by a non-profit funded by supporting members.	Freemium Free sign-up with paid plans for more features.
Web	Web
Visual overview of a research topic Very large index of open research outputs	Visual citation maps from seed papers Alerts for new papers on a topic
AI mapping is still in beta Maps are built from metadata, not full text	Not usable for building maps on small phone screens Advanced features are on paid plans
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is 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.