Alternatives to Citizendium for Windows with any license

Platforms

Web / Online

Development

Indie / Classic

Other Platforms

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  • Wikipedia icon

    Wikipedia

    Wikipedia is a free, multilingual encyclopedia project supported by the non-profit Wikimedia Foundation. Wikipedia has 17 million articles (3.5 million in English), which have been written collaboratively by volunteers around the...

    Free Windows Web / Cloud Android iPhone Blackberry Android Tablet Kindle Fire

  • Encyclopædia Britannica icon

    Encyclopædia Britannica

    The Encyclopædia Britannica is a general English-language encyclopaedia published by Encyclopædia Britannica, Inc., a privately-held company. The articles in the Britannica are aimed at educated adult readers, and written by...

    Commercial Mac Windows Web / Cloud

  • Dixio icon

    Dixio

    Dixio is the solution for all those who care about their language Who want to learn more and enrich their vocabulary: when you receive a presentation or prepare a document, when you are reading in Internet or preparing your...

    Freemium Windows Web / Cloud Android iPhone iPad

  • Alchetron icon

    Alchetron

    Alchetron.com is a free social encyclopedia for world where you can create, organize and learn easily using topics. With Alchetron you can search & share thousands of organized topics which can be biographies, free courses for...

    Free Mac Windows Linux Web / Cloud Android Chrome OS Android Tablet

  • Oppia icon

    Oppia

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

    Open Source Mac Windows Linux Web / Cloud Self-Hosted