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crqt-ngThorium Reader
Free

Free and open source under the GNU GPL version 2 or later.

 Free

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

Linux Windows, macOS, Linux
  • Supports a broad range of ebook formats
  • Can open books from ZIP archives
  • Supports library imports, bookmarks and adjustable reading layouts.
  • DRM-protected EPUB and MOBI are not supported
  • Format and protection support depend on the book being opened.
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0-or-later License: BSD-3-Clause
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked October 8, 2026

Checked September 22, 2026

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