The Best Open Source Wikipedia AlternativesTop Encyclopedias and other similar apps like Wikipedia

The best open source alternative to Wikipedia is Kiwix. If that doesn't suit you, our users have ranked more than 50 alternatives to Wikipedia and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Wikipedia are WikiReader, Wikiless, Citizendium and XOWA.

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Wikipedia alternatives are mainly Encyclopedias, but if you're looking for Online Education Services or Web Servers you can filter on that. Other popular filters include Open Source. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Wikipedia.
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Alternatives list

  1. Kiwix icon

    Kiwix

     118 likes

    Provides offline access to Wikipedia and HTML content via ZIM format, featuring a full-text search engine, multi-language interface, export capabilities, bookmarks, content manager, and support for Windows, macOS, Linux, Android, USB drives, and local servers.

    27 Kiwix alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Microsoft Edge
    • Google Chrome
    • Flathub
    • F-Droid
    • Wine
    • Mozilla Firefox
    Kiwix screenshot 1
     
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    2
  5. Citizendium icon

    Citizendium

     10 likes

    Citizendium, powered by MediaWiki, is "an open wiki project dedicated to creating a free, comprehensive, and reliable repository of structured knowledge". Unlike with Wikipedia, a contributor must register using their real name and verify their identity.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    • MediaWiki
    Citizendium screenshot 1
     
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    2
  6. XOWA icon

    XOWA

     13 likes

    XOWA is the free, open-source application that lets you download Wikipedia to your computer. Access all of Wikipedia offline -- without an internet connection!

    Cost / License

    • Free
    • Open Source

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • Android Tablet
    • Raspberry Pi
    XOWA screenshot 1
     
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    1
  7. Oppia icon

    Oppia

     26 likes

    Oppia is a free, open-source learning platform. Full of interactive activities called 'explorations', Oppia helps curious minds learn and teach.

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Self-Hosted
    Oppia screenshot 1
     
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    1
  9. WikiIndex icon

    WikiIndex

     14 likes

    Welcome to WikiIndex, a wiki of all wiki, wiki people, wiki software, wiki farms, and wiki ideas, a 'work in progress' founded in 2006.

    44 WikiIndex alternatives

    Cost / License

    • Free
    • Open Source

    Platforms

    • Online
    WikiIndex screenshot 1
     
  10. WikiSpooks.com icon

    WikiSpooks.com

     28 likes

    WikiSpooks is a global alternative encyclopedia on politics, spy craft, deep state intelligence, and conspiracies, free of corporate influence, partisan politics, or government propaganda for historians and truth-seekers to read, edit, and share.

    78 WikiSpooks.com alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
     
  11. Metacademy icon

    Metacademy

     19 likes

    Metacademy - a free open source platform for efficient, personalized learning.

    Cost / License

    Platforms

    • Online
    Metacademy screenshot 1
     
  12. Libregamewiki icon

    Libregamewiki

     11 likes

    LibreGameWiki the free gaming encyclopedia for games developed as open source and using open media.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Online
    • MediaWiki
     
  13. Wike icon

    Wike

     2 likes

    Wike is a Wikipedia reader for the GNOME Desktop. Provides access to all the content of this online encyclopedia in a native application, with a simpler and distraction-free view of articles.

    Cost / License

    Platforms

    • Linux
    • Flathub
    • GNOME
    • Linux Mobile
    Wike screenshot 1
     
  14. Encyclopaedia of Mathematics icon

    Encyclopaedia of Mathematics

     5 likes

    The Encyclopedia of Mathematics wiki is an open access resource designed specifically for the mathematics community. The original articles are from the online Encyclopaedia of Mathematics, published by Kluwer Academic Publishers in 2002.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Online
    Encyclopaedia of Mathematics screenshot 1
     
12 of 26 Wikipedia alternatives