Open Source calibre Alternatives

    The best open source alternative to calibre is Okular, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to calibre and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to calibre are Polar (Freemium, Open Source), Foliate (Free, Open Source), Document Viewer (Free, Open Source) and Cool Reader (Free, Open Source).

    The list of alternatives was last updated Jun 7, 2021

    Platforms

    • Android
    • Windows
    • iPhone
    • Mac
    • iPad
    • Linux
    • Android Tablet
    • Online
    • Windows Phone
    • Self-Hosted
    • Windows S
    • Symbian S60
    • Blackberry
    • Chrome OS
    • Windows Mobile
    • BSD
    • Firefox
    • FBReader
    • ReadMe
    • Java Mobile

    Features

    • Educational
    • Library
    • Night mode/Dark Theme
    • Offline Reading
    • Text Highlighting
    • Text to Speech
    • Full text search
    • Portable
    • PDF annotation
    • Dropbox integration
    • Integrated Search
    • Cloud sync
    • Fullscreen support
    • Reading
    • Export to PDF
    • Support for Themes
    • Themes
    • Customizable
    • Built-in themes
    • Bookmarks

    License

    × Clear
    • Free
    • Open Source
    • Paid
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    Showing 10 of 29 alternatives