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Atsumeru vs Stump: catalog facts
Atsumeru	Stump
Free Free and open source under the MIT licence.	Free Free and open source.
Windows, Linux, Android, Web, Self-hosted	Web, Self-hosted
Reads CBZ, CBR, CB7, PDF and DjVu files Two-way reading history sync between web and apps	Handles comics, manga and ebooks OPDS support for third-party reader apps
ePub and FB2 support is limited Smaller project with a modest community	Requires running your own server
Downloadable app, Self-hosted	Self-hosted
Open source	Open source
License: MIT	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 October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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