Wikipedia - Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
Teachable - Create and sell beautiful online courses with the platform used by the best online entrepreneurs to sell $100m+ to over 4 million students worldwide.
Encyclopædia Britannica - Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.
Clever - syncing between education applications for K-12 schools
Kiwix - Kiwix enables you to have the whole Wikipedia at hand wherever you go!
Claroline - Claroline is a collaborative eLearning and eWorking platform.