Apps similar to Citizendium include Wikipedia, which is free and open source. Other options are Ibis Wiki, Grokipedia, Encyclopædia Britannica and Miraheze. Encyclopedias like Citizendium are a crowded field, with more than 25 alternatives for the web, Android, iPhone, iPad and self-hosting.
Free content, multilingual online encyclopedia written and maintained by a community of volunteers through a model of open collaboration, using a wiki-based editing system.
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Ibis is a federated encyclopedia which uses the ActivityPub protocol, just like Mastodon or Lemmy. Users can create, browse, edit articles and use many other features. If you want to start a wiki for a TV series, a video game, or an open source project, then Ibis is for you!
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Grokipedia is an online encyclopedia created by xAI that positions itself as an alternative to Wikipedia. Articles are generated and later labeled as “fact checked by .
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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 a staff of about 100 full-time editors and...
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Miraheze is a wiki farm (hosts wikis) for free and with no ads, it also provides custom domains, extensions and many other features. It is based on MediaWiki.
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FANDOM is a community-based service that allows anyone to create a wiki on virtually any subject. Discover, share and add your knowledge! Wikia is financed by advertisment!
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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.
Welcome to WikiIndex, a wiki of all wiki, wiki people, wiki software, wiki farms, and wiki ideas, a 'work in progress' founded in 2006.
Oppia is a free, open-source learning platform. Full of interactive activities called 'explorations', Oppia helps curious minds learn and teach.
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Wikipanion is the best and fastest Wikipedia browsing application for the iPhone. Wikipanion uses a direct connection to the Wikipedia servers, making it extremely fast. Never deal with overloaded third party servers. Never worry about third party server privacy concerns.
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Online dictionary and encyclopedia with pictures, facts, and videos. Get information and homework help with millions of articles in our free, online library.
User-editable encyclopedia for fans of anthropomorphic animals. Over 18,000 articles on furry community and culture in twenty-one languages.
