Gource - Gource is a software version control visualization tool.
Droid Transfer - Save and Print your Android Phone Messages, Manage Photos, Music and other files on your Android Phone through your PC. Android Transfer Software.
The GitHub Matrix Screensaver - Latest commits from GitHub visualized Matrix-style
TreeSize - TreeSize tells you where precious disk space has gone to.
Codeology - Open-source algorithm that visualizes GitHub projects
Fossils - Find and clean out all your old unused files