Compare software

Thorium ReaderReadest
Free

The open-source software is available without a license fee. Hosting, hardware and…

 Freemium

The app is free and open source under the AGPL. The optional cloud sync service has paid…

Windows, macOS, Linux Windows, macOS, Linux, Android, Web, iOS
  • Supports library imports, bookmarks and adjustable reading layouts.
  • Reads EPUB, PDF, MOBI, AZW3, FB2, CBZ, TXT and Markdown in one app
  • The same reader on macOS, Windows, Linux, Android, iOS and the web
  • Format and protection support depend on the book being opened.
  • Cloud sync is a hosted service with paid tiers, not purely local
  • A young project, so features and stability are still moving
Downloadable app Downloadable app, Web application
Open source Open source
License: BSD-3-Clause License: AGPL-3.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 21, 2026

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