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Paperguide vs OpenRead: catalog facts
Paperguide	OpenRead
Freemium Free to start, with paid plans and demos for teams.	Freemium Free tier available, with a paid Pro plan.
Web	Web
Cited answers from a large paper index Imports libraries from Zotero and Mendeley	Search across more than 300 million papers Compare several papers to spot agreements and contradictions
Web only, with no offline use AI answers still need checking against the sources	Web only, no desktop app Advanced features sit behind the Pro plan
Web application	Web application
Closed source	Closed source
License not stated	License not stated
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.