Daily Curiosity for iOS - The top 5 things to learn on Curiosity.com, delivered daily.
Gource - Gource is a software version control visualization tool.
Endless - Random and amazing Wikipedia articles.
The GitHub Matrix Screensaver - Latest commits from GitHub visualized Matrix-style
Corbie - Expand your general knowledge in just 5 minutes a day
Octohunt - Search to find developers in your city on Github.