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Thorium Reader vs Foliate: catalog facts
Thorium Reader	Foliate
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source, with no paid edition.
Windows, macOS, Linux	Linux
Supports library imports, bookmarks and adjustable reading layouts.	Opens EPUB, Mobipocket, Kindle, FB2, CBZ and PDF Annotations and progress are plain JSON files you can sync however you want
Format and protection support depend on the book being opened.	Linux only; there is no Windows or macOS build Needs recent GTK4, libadwaita and WebKitGTK, which older distributions may not have
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 20, 2026

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