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CORE vs Zendy: catalog facts
CORE	Zendy
Free Searching is free; CORE is a not-for-profit service with additional offerings for…	Freemium Offers free access alongside lower-cost paid access to premium literature.
Web	Android, iOS, Web
Very large collection of open access papers Full text as well as metadata	Combines a scholarly library with AI search and summaries Chat assistant gives answers with references
Limited to open access content Search only; no AI summaries described in the research	Full access to premium content requires payment AI summaries should be checked against the papers themselves
Web application	Downloadable app, Web application
Closed source	Closed source
License not stated	License not stated
No account needed	Account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked October 1, 2026

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