Wikipedia Wikipedia is a free, multilingual encyclopedia project supported by the non-profit Wikimedia Foundation. Wikipedia has 17 million articles (3.5 million in English)... Free Open Source Web Android iPhone Blackberry Android Tablet ... Kindle Fire MediaWiki Ad-free HTTPS Support IFTTT integration Multiple languages ... User generated Add a feature 1298 Like
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 No features added Add a feature 12 Like
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 No features added Add a feature 3 Like
Alchetron Alchetron.com is a free social encyclopedia for world where you can create, organize and learn easily using topics. With Alchetron you can search & share... Free Mac OS X Windows Linux Web Android ... Chrome OS Android Tablet Social media integration Add a feature 3 Like
Citizendium A wiki-based encyclopedia, the primary difference between Citizendium and Wikipedia being that Citizendium has "subject matter expert" editors, chosen by the... Free Web No features added Add a feature 1 Like
Freebo Freebo is Topics search tool. If you don't know something, ask Freebo, it probably knows. Pick your interest and have fun reading and learning various Topics data, ... Free Android Android Tablet No features added Add a feature 0 Like
YES NO Lunyr Lunyr is a decentralized crowdsourced encyclopedia and knowledge base, on the Ethereum blockchain. It rewards users with app tokens... encyclopedia knowledge-base
