Compare software

Kindle for Web vs Readest: catalog facts
Kindle for Web	Readest
Free The reader is free; books are bought or borrowed through Amazon.	Freemium The app is free and open source under the AGPL. The optional cloud sync service has paid…
Web	Windows, macOS, Linux, Android, Web, iOS
Nothing to install Highlights, notes and in-book search	Reads EPUB, PDF, MOBI, AZW3, FB2, CBZ, TXT and Markdown in one app The same reader on macOS, Windows, Linux, Android, iOS and the web
Requires an Amazon account Only reads content from your Amazon Kindle library	Cloud sync is a hosted service with paid tiers, not purely local A young project, so features and stability are still moving
Web application	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
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 21, 2026

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