Compare software

ReadestThorium Reader
Freemium

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

 Free

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

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

Checked September 21, 2026

Checked September 22, 2026

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