Encyclopedia.com is described as 'Online dictionary and encyclopedia with pictures, facts, and videos. Get information and homework help with millions of articles in our free, online library' and is an app in the Education & Reference category. There are more than 25 alternatives to Encyclopedia.com for a variety of platforms, including Online / Web-based, Android, iPhone, Android Tablet and iPad. The best alternative is Wikipedia, which is both free and Open Source. Other great apps like Encyclopedia.com are Encyclopædia Britannica (Freemium), WikiSpooks.com (Free, Open Source), Oppia (Free, Open Source) and Reference.com (Free).
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 world.
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.
Reference.com offers a massive online dictionary, thesaurus, encyclopedia, quote finder, and translator (powered by Google Translate)- all for free. For the Dictionary.com and Thesaurus.com mobile app, go here. Dictionary.com
Welcome to WikiIndex, a wiki of all wiki, wiki people, wiki software, wiki farms, and wiki ideas, a 'work in progress' founded in 2006. This is part of a continued effort to self-organize information collaboratively, started by Ward Cunningham a decade ago.
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.