Open Source KOReader Alternatives for Android

There are many alternatives to KOReader for Android if you are looking for a replacement. The best open source Android alternative is Librera Reader. If that doesn't suit you, our users have ranked more than 50 alternatives to KOReader and 16 are open source and available for Android so hopefully you can find a suitable replacement. Other interesting open source Android alternatives to KOReader are MuPDF, Readest, Book's Story and Openlib.

filter to find the best alternatives

KOReader alternatives are mainly Ebook Readers, but if you're looking for PDF Readers or Ebook Libraries you can filter on that. Other popular filters include Android and Android + Open Source. These are just examples - use the filter bar below to find more specific alternatives to KOReader.
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Alternatives list

  1. 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 types

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Librera Reader screenshot 1
     
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    1
    Comments about Librera Reader as an Alternative to KOReader
    Guest
    Positive
    0

    easy to get via github even if you have no access to google's service

    Review by a new / low-activity user.
    KOReader Icon
    Librera Reader icon

    • Librera Reader is the most popular Android & Android Tablet alternative to KOReader.

    • Librera Reader is Freemium and Open SourceKOReader is Free and Open Source
    • Librera Reader is Customizable and Privacy focusedKOReader is not according to our users
  2. MuPDF icon

    MuPDF

     157 likes

    MuPDF offers a highly versatile PDF, XPS, and eBook interpreter, customizable as a renderer, viewer, or toolkit. Features include digital signatures, redactions, form filling, annotations, and page manipulation, ideal for mobile, eBooks, and embedded apps supporting Java, C++, and Python.

    89 MuPDF alternatives

    Cost / License

    Application types

    Platforms

    • Windows
    • Linux
    • Android
    • F-Droid
    • Xfce
    MuPDF screenshot 1
     
  4. Readest icon

    Readest

     27 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 types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Flathub
    • Flatpak
    • Android Tablet
    Annotation
     

    • Readest is the most popular iPhone & iPad alternative to KOReader.

    • Readest is Free and Open SourceKOReader is also Free and Open Source
    • Readest is Privacy focusedKOReader is not according to our users
  5. Book's Story icon

    Book's Story

     33 likes

    Material3 eBook reader - Book's Story. Built with Jetpack Compose. Free & Open Source & Ad Free. 4 supported file formats (.txt, .pdf, .epub, .fb2), 2 supported languages. Lots of customization.

    Cost / License

    Application types

    Platforms

    • Android
    • F-Droid
    Book's Story screenshot 1
     
  7. Storyteller icon

    Storyteller

     24 likes

    Storyteller is a self-hosted platform for creating and reading ebooks with synced narration. It's made of three components: the API server, the web interface, and the mobile apps. Together, these components allow you to take audiobooks and ebooks that you already own and...

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Android
    • iPhone
    • Self-Hosted
    • Docker
    Storyteller screenshot 1
    Storyteller screenshot 2
    Storyteller screenshot 3
     
  9. 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

    • Freemium (Pay once)
    • Open Source (GPL-3.0)

    Application types

    Platforms

    • Android
    • Android Tablet
    uRead screenshot 1
     
  11. Cool Reader icon

    Cool Reader

     66 likes

    Cool Reader is fast and small cross-platform XML/CSS based eBook reader for desktops and handheld devices. Understands a number of text document formats, suppurt OPDS (in new ui-opengl version). Fully customizable palette, text reformatting with any font size, font...

    95 Cool Reader alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Alerts

    • Discontinued

    Platforms

    • Windows
    • Linux
    • Android
    • Android Tablet
    • Haiku
    Android version
     
  13. Chaka icon

    Chaka

     4 likes

    Read fluently and comfortably, with simple and clear interface.

    Supported Document Types: PDF, EPUB, MOBI, CBZ, FB2, XPS, TXT, HTML, OFFICE(DOCX, XLSX, PPTX) and ZIP/GZIP

    Features: Horizontal / Vertical Flip Continuous Scroll Lock Stray: Keep scroll straight Margin Crop Focus M.

    45 Chaka alternatives

    Cost / License

    Application types

    Platforms

    • Android
    Chaka screenshot 1
    Chaka screenshot 2
    Chaka screenshot 3
     
  14. Duofolio icon

    Duofolio

     2 likes

    One of the best ways to learn a new language is by reading books in it. But this can get very tedious, as you frequently need to switch between the dictionary and the book you're reading. Duofolio's purpose is to make that experience a little bit easier.

    Cost / License

    Application type

    Alerts

    • Discontinued

    Platforms

    • Android
    Duofolio screenshot 1
    Duofolio screenshot 2
    Duofolio screenshot 3
     
12 of 16 KOReader alternatives