Encyclopedia.com AlternativesEncyclopedias and other similar apps like Encyclopedia.com

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.

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...

Wikiless is a free open source alternative Wikipedia front-end focused on privacy.

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.

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

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

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.

IFWiki is a wiki containing information about interactive fiction, including IF history, theory, craft, tools, and people. IFWiki serves as both a historical record of community knowledge and a guide to resources for playing and creating interactive fiction.

WikiPathways was established to facilitate the contribution and maintenance of pathway information by the biology community. WikiPathways is an open, collaborative platform dedicated to the curation of biological pathways.

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

Golden is a self-constructing knowledge database built by artificial and human intelligence with the goal of mapping all human knowledge.

Lunyr is a decentralized crowdsourced encyclopedia and knowledge base, on the Ethereum blockchain. It rewards users with app tokens for peer-reviewing and contributing information.