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Kavita vs Atsumeru: catalog facts
Kavita	Atsumeru
Freemium The server is free and open source. An optional Kavita+ subscription adds external…	Free Free and open source under the MIT licence.
Windows, macOS, Linux, Self-hosted, Web	Windows, Linux, Android, Web, Self-hosted
Purpose-built readers for EPUB, PDF and image-based comics, including webtoon mode Multi-user with per-library and age restrictions, through built-in logins or OIDC	Reads CBZ, CBR, CB7, PDF and DjVu files Two-way reading history sync between web and apps
You have to run and maintain a server, and expose it safely if you want remote access Some metadata enrichment is only available through the paid Kavita+ add-on	ePub and FB2 support is limited Smaller project with a modest community
Self-hosted, Web application	Downloadable app, Self-hosted
Open source	Open source
License: GPL-3.0	License: MIT
Account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 2, 2026

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