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KOReader vs Plato: catalog facts
KOReader	Plato
Free Free and open source under the AGPL 3.0.	Free Free and open source under the AGPL-3.0 licence.
Linux, Android	Linux
Runs on Kindle, Kobo, PocketBook, Cervantes and reMarkable hardware Opens PDF, DjVu, CBZ, EPUB, FB2, Mobi, DOC, RTF, HTML, CHM and TXT	Replacement reading app for Kobo e-readers Documented with a guide, a manual and build instructions
Installing on a locked e-reader means jailbreaking it first, at your own risk The settings menus are deep and not self-explanatory	Only runs on Kobo e-readers Requires Kobo firmware 4.6 or later
Downloadable app	Downloadable app
Open source	Open source
License: AGPL-3.0	License: AGPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 23, 2026

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