GitHub Visualizer - Enter user/repo and see the project visually
Padbury Clock Screensaver - Minimal screensaver for Mac
Gource - Gource is a software version control visualization tool.
XScreenSaver - XScreenSaver is the standard screen saver collection shipped on most Linux and Unix systems running...
SyntaxDB - Easily look up programming syntax for multiple languages
Really Slick Screensavers - Really Slick contains free 3D OpenGL screensavers.