Qwiki - Find and Read Articles on Wikipedia from your Mac menu bar!
Kalam Labs - Twitch for Science
Wikipedia - Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
MathCrunch - Learn math stress free
Endless - Random and amazing Wikipedia articles.
SpeQ Mathematics - SpeQ is a small, extensive mathematics program with a simple, intuitive interface.