OSX Server is a Mac-specific enterprise solution that provides reliability for video displays in Wiki pages when viewed in Firefox or Internet Explorer, sharepoints with Time Machine, and vacation mail notices.
Wineskin Winery creates Mac OS X ports/wrappers for Windows programs/games, with an easy-to-use GUI, integrated Wine, X11 and an installer.
LiquidMac uses a particle system to imitate liquid and responds to laptop orientation.
