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calibre

Free e-book manager, converter and reader

calibre is an open-source app for organizing an e-book library, converting between formats, editing e-books and syncing them to e-readers.

Visit calibre ↗

Pricing: Free

Platforms: Windows, Mac, Linux

Categories: Reading

calibre compared with similar tools

Product	Price	Open source	Self-host	Platforms
calibre	Free	Yes	–	Windows, Mac, Linux
SumatraPDF	Free	Yes	–	Windows
Okular	Free	Yes	–	Linux, Windows
Karakeep	Free plan	Yes	Yes	Web, iOS, Android, Browser extension, Self-hosted
linkding	Free	Yes	Yes	Web, Self-hosted, Browser extension
Fluent Reader	Free	Yes	–	Mac, Windows, Linux
Skim	Free	Yes	–	Mac

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Questions

Is calibre free?

calibre is free.

Is calibre open source?

Yes, calibre is open source.

What platforms does calibre run on?

calibre is available for Windows, Mac, Linux.

What are some alternatives to calibre?

Similar indie products include SumatraPDF, Okular, Karakeep, linkding and 4 more.

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