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

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