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Calibre-Web vs Stump: catalog facts
Calibre-Web	Stump
Free Free to use, with source code published on GitHub.	Free Free and open source.
Web, Self-hosted	Web, Self-hosted
Uses an existing Calibre database directly Read books in the browser or download them	Handles comics, manga and ebooks OPDS support for third-party reader apps
Depends on a library created with Calibre Requires running a server	Requires running your own server
Self-hosted	Self-hosted
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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