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Koodo ReaderMoon+ Reader
Free

Free and open source under the AGPL-3.0.

 Freemium

Free version available, with a paid Pro version.

Windows, macOS, Linux, Android, iOS, Web Android
  • Over fifteen formats including EPUB, PDF, MOBI, AZW3, comic archives and DOCX
  • Syncs through storage you already control rather than a vendor cloud
  • Very wide format support including Markdown and CHM
  • Reads books inside ZIP and RAR archives and OPDS catalogs
  • It reads DRM-free files only; books bought from a store with DRM will not open
  • Sync depends on whatever storage you configure, so the setup is on you
  • Android only
  • Some features require the paid Pro version
Downloadable app, Web application Downloadable app
Open source Closed source
License: AGPL-3.0 License not stated
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked September 20, 2026

Checked September 23, 2026

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