Compare software

EPUBReaderッツ Ebook Reader
Free

Free to install.

 Free

Free to use, with the source code published on GitHub.

Browser extension Web, Self-hosted
  • Works in Firefox, Chrome, Opera and Edge
  • Opens books in place without copying them
  • Works with Yomitan and similar dictionary extensions
  • Runs in the browser with nothing to install
  • Does not open DRM-protected ebooks
  • Read-aloud needs a separate extension
  • Focused on Japanese reading rather than general ebook management
  • Dictionary lookups depend on a separately installed browser extension
Browser extension Web application, Self-hosted
Closed source Open source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Works offline Works offline

Checked September 23, 2026

Checked October 1, 2026

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