calibre AlternativesOnly apps categorised as PDF Readers

The best PDF Reader alternative to calibre is KOReader, 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 are PDF Readers so hopefully you can find a suitable replacement. Other interesting PDF Reader alternatives to calibre are Librera Reader, Foliate, Koodo Reader and Readest.

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calibre alternatives are mainly PDF Readers, but if you're looking for Ebook Readers or Ebook Libraries you can filter on that. Other popular filters include Android, Self-Hosted, Windows, Mac, Linux, Ebook Library and iPad. These are just examples - use the filter bar below to find more specific alternatives to calibre.
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Alternatives list

  1. KOReader icon

    KOReader

     73 likes

    An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Kindle, Kobo, PocketBook, Linux and Android devices.

    68 KOReader alternatives

    Cost / License

    Application type

    Platforms

    • Linux
    • Android
    • AppImageHub
    • Kobo Books
    • Flathub
    • F-Droid
    • Kindle Fire
    • Android Tablet
    KOReader screenshot 1
     
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    2
    13
    Comments about KOReader as an Alternative to calibre
    N.A. Ferrell
    Positive
    0

    A very feature-full reading app. I use it with my PocketBook Color and PocketBook InkPad Color and it is much snappier than the default reading app.

    Biep
    Positive
    0

    As an e-book reader it is unparalleled, I believe. It is not a feature-rich library management tool, though.

    KOReader icon
    KOReader icon

    • Most users think KOReader is a great calibre alternative.

    • KOReader is Free and Open Sourcecalibre is also Free and Open Source
  2. Librera Reader icon

    Librera Reader

     77 likes

    Librera Reader is a highly customizable and feature-rich application for reading books in PDF, EPUB, MOBI, DjVu, FB2, TXT, RTF, AZW, AZW3, HTML, CBZ, CBR formats on Android devices.

    65 Librera Reader alternatives

    Cost / License

    • Freemium
    • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Librera Reader screenshot 1
     
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    8
  4. Foliate icon

    Foliate

     58 likes

    A simple and modern eBook viewer for Linux desktops.

    57 Foliate alternatives

    Cost / License

    Application type

    Platforms

    • Linux
    • BSD
    • Snapcraft
    • Flathub
    Foliate screenshot 1
     
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    14
  5. Ad
    Screenshot
    Adobe Digital Editions icon
    Adobe Digital Editions

    Optimize your reading experience with the best eBook reader across formats.

    https://www.adobe.com
    Learn More
  6. Koodo Reader icon

    Koodo Reader

     62 likes

    Koodo Reader is an all-in-one e-book reader that can help you better manage and study your e-books. It's free and open-source.

    28 Koodo Reader alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Flathub
    Koodo Reader screenshot 1
     
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    2
    6
    Comments about Koodo Reader as an Alternative to calibre
    alexanderprange
    Positive
    1

    cleaner and significantly better user interface and user friendly.

    RemovedUser
    Positive
    0

    I use the web-based platform and it's just very good. Super intuitive and minimalistic but with great functionalities and customization. And it's FOSS.

    Review by a new / low-activity user.
    Koodo Reader icon
    Koodo Reader icon

    • Most users think Koodo Reader is a great calibre alternative.

    • Koodo Reader is Free and Open Sourcecalibre is also Free and Open Source
  7. Readest icon

    Readest

     28 likes

    Readest is a modern, feature-rich ebook reader designed for avid readers offering seamless cross-platform access, powerful tools, and an intuitive interface to elevate your reading experience.

    14 Readest alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Flathub
    • Flatpak
    • Android Tablet
    Annotation
     
  8. ReadEra icon

    ReadEra

     56 likes

    Read book files in EPUB, PDF, DOC, DOCX, RTF, TXT, DJVU, FB2, MOBI and CHM formats. Supports chapters, bookmarks, page style. Saves the current reading position. Automatic detection and display of the list of all supported documents on your device.

    77 ReadEra alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Android
    ReadEra screenshot 1
     
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    12
  10. Openlib icon

    Openlib

     29 likes

    Openlib is an open source app to download and read books from shadow library (Anna’s Archive). The App Has Built In Reader to Read Books.

    67 Openlib alternatives

    Cost / License

    Application type

    Platforms

    • Android
    • F-Droid
    Openlib screenshot 1
     
  11. Calibre-Web icon

    Calibre-Web

     31 likes

    Calibre-Web is a web app providing a clean interface for browsing, reading and downloading eBooks using an existing calibre database.

    82 Calibre-Web alternatives

    Cost / License

    Application type

    Platforms

    • Self-Hosted
    • Cloudron
    Calibre-Web screenshot 1
     
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    8
  12. Kavita icon

    Kavita

     28 likes

    Lightning fast with a slick design, Kavita is a rocket-fueled self-hosted digital library which supports a vast array of file formats. Install to start reading and share your server with your friends. book reader, self hosted, manga, comics, free, manhwa, e readers, electronic...

    170 Kavita alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Self-Hosted
    • Cloudron
    Kavita screenshot 1
     
  13. Handy Reader icon

    Handy Reader

     9 likes

    Customizable reader for EPUB, MOBI, AZW, PDF, FB2, and TXT, offering text-to-speech, bookmarks, highlighting, notes, adjustable fonts, color themes, intuitive interface, quick annotations, search, theme customization, and background image support.

    53 Handy Reader alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Android
    • Android Tablet
    Handy Reader screenshot 1
     
  14. uRead icon

    uRead

     9 likes

    Discover uRead, your ultimate companion for reading and listening! Whether you’re a casual reader or a book enthusiast, uRead transforms your experience with advanced features and a user-friendly design.

    Cost / License

    Application type

    Platforms

    • Android
    • Android Tablet
    uRead screenshot 1
     
  15. BookLore icon

    BookLore

     8 likes

    Self-hosted platform for managing personal book collections, offering responsive in-browser reading of PDFs and ePubs, automatic and manual metadata, multi-user support, organization by libraries and shelves, progress tracking, user permissions, and secure library management.

    31 BookLore alternatives

    Cost / License

    Application type

    Platforms

    • Self-Hosted
    • Docker
    BookLore screenshot 1
     
12 of 28 calibre alternatives