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Komikku vs Houdoku: catalog facts
Komikku	Houdoku
Free Free and open source.	Free Free and open source.
Android	Windows, macOS, Linux
Free and open source Extension system for adding sources	Reads local manga files and extension sources Vertical and two-page reading modes
Android only Not distributed through Google Play	Desktop only, with no mobile app Online sources depend on extensions
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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