Compare software

FBReader vs EPUBReader: catalog facts
FBReader	EPUBReader
Freemium The reader is free. Some format plugins and premium features are paid.	Free Free to install.
Windows, macOS, Linux, Android, iOS	Browser extension
Same library and reading position across desktop and mobile Reads custom OPDS catalogues as well as local files	Works in Firefox, Chrome, Opera and Edge Opens books in place without copying them
Some features and formats need paid add-ons The desktop builds lag the mobile apps	Does not open DRM-protected ebooks Read-aloud needs a separate extension
Downloadable app	Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

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