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 Readest. If that doesn't suit you, our users have ranked more than 50 alternatives to KOReader and many of them are open source and available for Android so hopefully you can find a suitable replacement. Other interesting open source Android alternatives to KOReader are Librera Reader, Koodo Reader, MuPDF and Book's Story.

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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
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Alternatives list

  1. Readest icon

    Readest

     54 likes

    Readest is a modern, open-source ebook reader for Windows, macOS, Linux, iOS, Android, and the web.

    22 Readest alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Flathub
    • Flatpak
    • US flagUnited States
    Annotation
    Good alternative?
     
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    1
  2. Librera Reader icon

    Librera Reader

     82 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.

    78 Librera Reader alternatives

    Cost / License

    • Freemium
    • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    • OpenAPK
    • SK flagSlovakia
    • European Union flagEU
    Librera Reader screenshot 1
    Good alternative?
     
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    1
  4. Koodo Reader icon

    Koodo Reader

     77 likes

    Koodo Reader is a powerful ebook reader designed to provide a simple and easy-to-use reading experience.

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Flathub
    • CN flagChina
    Koodo Reader screenshot 1
    Good alternative?
     
  5. MuPDF icon

    MuPDF

     163 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.

    112 MuPDF alternatives

    Cost / License

    Application type

    Platforms

    • Windows
    • Linux
    • Android
    • F-Droid
    • Xfce
    • US flagUnited States
    MuPDF screenshot 1
    Good alternative?
     
  6. Book's Story icon

    Book's Story

     35 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 type

    Platforms

    • Android
    • F-Droid
    Book's Story screenshot 1
    Good alternative?
     
  8. Openlib icon

    Openlib

     36 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.

    81 Openlib alternatives

    Cost / License

    Application type

    Platforms

    • Android
    • F-Droid
    Openlib screenshot 1
    Openlib screenshot 2
    Openlib screenshot 3
    Good alternative?
     
  9. Episteme Reader icon

    Episteme Reader

     12 likes

    Episteme Reader is an offline-first application designed for reading various document formats. It leverages native Android technologies and C++ libraries to provide a performant reading experience with customization capabilities.

    Cost / License

    Application type

    Platforms

    • Windows
    • Android
    • Android Tablet
    • F-Droid
    • Linux
    • Debian
    • Fedora
    • Arch Linux
    • IN flagIndia
    Episteme Reader screenshot 1
    Episteme Reader screenshot 2
    Episteme Reader screenshot 3
    Good alternative?
     
  10. Storyteller icon

    Storyteller

     26 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
    Good alternative?
     
  11. uRead icon

    uRead

     10 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.

    69 uRead alternatives

    Cost / License

    Application type

    Platforms

    • Android
    • Android Tablet
    uRead screenshot 1
    Good alternative?
     
  13. Cool Reader icon

    Cool Reader

     67 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...

    108 Cool Reader alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Windows
    • Linux
    • Android
    • Android Tablet
    • Haiku
    • RU flagRussia
    Android version
    Good alternative?
     
12 of 22 KOReader alternatives