Wikiverse - An interactive galaxy of Wikipedia knowledge ✨
Wikids - An encyclopedia that talks to your kids
Qwiki - Find and Read Articles on Wikipedia from your Mac menu bar!
Litnerd - The Pixar for education, reading program for K-5 schools
Daily Curiosity for iOS - The top 5 things to learn on Curiosity.com, delivered daily.
Pili Pop - Great language learning method for kids