Flipside is a GUI and new interface for Windows Mobile PDA Pocket PC or Smart Phone. Its main objective is to allow for an intuitive beautiful sliding interface with big buttons and no need for using a stylus.

Changes:

-Supports QVGA and VGA not square
-Default programs can be changed under settings
-.ini file to manually change settings
-Improvement on quick slide programs so you can flip sideways easier

http://forum.xda-developers.com/showthread.php?t=385036