The Best 6 Encyclopedia of Earth Alternatives

  • Encyclopædia Britannica icon

    Encyclopædia Britannica

    The Encyclopædia Britannica is a general English-language encyclopaedia published by Encyclopædia Britannica, Inc., a privately-held company.

    Commercial Mac OS X Windows Web

  • Infogalactic icon

    Infogalactic

    Infogalactic is an Internet-based, free-content encyclopedia project that is a dynamic fork of Wikipedia and improves upon the online encyclopedia's model of openly...

    Free Web

  • Oppia icon

    Oppia

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

    Free Open Source Mac OS X Windows Linux Web Self-Hosted

  • Alchetron icon

    Alchetron

    Alchetron.com is a free social encyclopedia for world where you can create, organize and learn easily using topics.

    Free Mac OS X Windows Linux Android Android Tablet Chrome OS Web