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Foliate vs EPUBReader: catalog facts
Foliate	EPUBReader
Free Free and open source, with no paid edition.	Free Free to install.
Linux	Browser extension
Opens EPUB, Mobipocket, Kindle, FB2, CBZ and PDF Annotations and progress are plain JSON files you can sync however you want	Works in Firefox, Chrome, Opera and Edge Opens books in place without copying them
Linux only; there is no Windows or macOS build Needs recent GTK4, libadwaita and WebKitGTK, which older distributions may not have	Does not open DRM-protected ebooks Read-aloud needs a separate extension
Downloadable app	Browser extension
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 23, 2026

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