Java Psion Link (JPL) is a cross-platform tool for transferring files between Psion Epoc PDAs and any computer with a serial port and the ability to run Java. It uses the existing Psion Link protocol.
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.
