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BookFusionKoodo Reader
Freemium

Free account to get started, with paid plans for more.

 Free

Free and open source under the AGPL-3.0.

Android, Web, Browser extension Windows, macOS, Linux, Android, iOS, Web
  • Syncs reading position across devices
  • Reads both EPUB and PDF
  • Over fifteen formats including EPUB, PDF, MOBI, AZW3, comic archives and DOCX
  • Syncs through storage you already control rather than a vendor cloud
  • Books are stored in a hosted cloud service
  • Requires an account
  • 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
Downloadable app, Web application, Hosted service, Browser extension Downloadable app, Web application
Closed source Open source
License not stated License: AGPL-3.0
Account needed No account needed
Not stated if it works offline Works offline

Checked September 23, 2026

Checked September 20, 2026

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