Encyclopedia of Earth is described as 'Expert-reviewed information about the Earth. For everyone' and is a Encyclopedia App in the Education & Reference category. There are more than 10 alternatives to Encyclopedia of Earth, not only websites but also apps for a variety of platforms, including Mac, Windows, Self-Hosted solutions and MediaWiki. The best alternative is Wikipedia, which is both free and Open Source. Other great sites and apps similar to Encyclopedia of Earth are Encyclopædia Britannica (Freemium), WikiSpooks.com (Free, Open Source), Oppia (Free, Open Source) and WikiIndex (Free, Open Source).
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.
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.
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 thousands of organized topics which can be biographies, free courses for students etc.
The underlying idea is organizing millions of contributors to collect and organize all of human knowledge into a vast library and at the same time paying the contributors an increasing share of the revenues earned through advertising