Wikiwand - A beautiful new interface to Wikipedia
Litnerd - The Pixar for education, reading program for K-5 schools
Wikipedia - Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
Pili Pop - Great language learning method for kids
Miraheze - Miraheze is a wiki farm (hosts wikis) for free and with no ads, it also provides custom domains...
Wikids - An encyclopedia that talks to your kids