Alternatives to Citizendium for all platforms with any license

  • Wikipedia icon

    Wikipedia

    Wikipedia is a free, multilingual encyclopedia project supported by the non-profit Wikimedia Foundation. Wikipedia has 17 million...

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

  • Wikia icon

    Wikia

    Wikia is a community-based service that allows anyone to create a wiki on virtually any subject. Discover, share and add your...

    Open Source Web / Cloud GitHub

  • Reference.com icon

    Reference.com

    Reference.com offers a massive online dictionary, thesaurus, encyclopedia, quote finder, and translator (powered by Google Translate)-...

    Free Web / Cloud

  • Encyclopædia Britannica icon

    Encyclopædia Britannica

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

    Commercial Mac Windows Web / Cloud

  • Referata icon

    Referata

    Referata offers hosting of semantic wikis, allowing you to add, structure and store data so it can be managed, shared, browsed and...

    Freemium Web / Cloud Self-Hosted

  • 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...

    Freemium Windows Web / Cloud Android iPhone iPad

  • Viki - Wikipedia icon

    Viki - Wikipedia

    Wikipedia, better than ever—on iPhone, iPad, and Apple Watch. Discover the world and enjoy beautiful typography with this sleek app. ...

    Commercial iPhone iPad

  • Newslines icon

    Newslines

    Newslines lets people create shared timelines on any person, product or news event. Writers create news snippets that are combined...

    Free Web / Cloud

  • Encyclopedia.com icon

    Encyclopedia.com

    Encyclopedia.com – Online dictionary and encyclopedia with pictures, facts, and videos. Get information and homework help with...

    Free Web / Cloud Java Mobile

  • purple icon

    purple Discontinued

    Dictionary from the Elementary project.

    Open Source Linux

  • Oppia icon

    Oppia

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

    Open Source Mac Windows Linux Web / Cloud Self-Hosted

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  • Alchetron icon

    Alchetron

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

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

  • Boopsie icon

    Boopsie

    Through way of different “channels”, Boopsie lets you intelligently search for content or articles on sites like IMDB, Wikipedia...

    Free Windows Mobile Android Java Mobile S60 Blackberry

  • Wikipanion icon

    Wikipanion

    Wikipanion is the best and fastest Wikipedia browsing application for the iPhone. Wikipanion uses a direct connection to the Wikipedia...

    Freemium iPhone iPad

  • WikiExplorer icon

    WikiExplorer

    WikiExplorer is the most advanced Wikipedia reader app for Android devices, it presents Wikipedia articles in a clean and elegant...

    Free Android Android Tablet

  • Wikifur icon

    Wikifur

    User-editable encyclopedia for fans of anthropomorphic animals. Over 18,000 articles on furry community and culture in twenty-one...

    Free Web / Cloud

  • Encyclopedia icon

    Encyclopedia

    Wikipedia is now available on your Windows 7 Phone! With this easy to use app, you can satisfy your thirst for information on-the-go....

    Free Windows Phone

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  • Stubia icon

    Stubia

    Stubia is a mobile encyclopedia that limits each article to 160 characters: this limitation makes each topic easy to understand.

    Free Web / Cloud

  • WikiDroyd icon

    WikiDroyd Discontinued

    Wikipedia is probably the single largest, most comprehensive and simply best information resource out there on the Internet - a really...

    Free Android

  • Articles  icon

    Articles

    Articles lets you easily read and discover Wikipedia Articles on your iPhone and iPod touch. Just enter a search term and let...

    Commercial iPhone

  • Miraheze icon

    Miraheze

    Miraheze is a wiki farm (hosts wikis) for free and with no ads, it also provides custom domains, extensions and many other features.

    Free Web / Cloud

  • Freebo icon

    Freebo

    Freebo is Topics search tool. If you don't know something, ask Freebo, it probably knows. Pick your interest and have fun reading...

    Free Android Android Tablet

  • MyWikis icon

    MyWikis

    A premium wiki host with top-class quality, excellent support, and VisualEditor (a WYSIWYG application), that puts an individual touch...

    Commercial Web / Cloud

  • Curiosity by Tamper icon

    Curiosity by Tamper

    Curiosity by Tamper is the easiest way to discover and learn about the world around you. Using your location, trending topics, and...

    Commercial iPhone iPad