Transparent Screen Lock - Password protect your workstation or server with "Transparent Screen Lock" while monitoring programs that are running.
Springtomize - Tear down the walls
ClearLock - A transparent screen locker.
Winterboard - Give your iPhone or iPod Touch a graphical overhaul!
Keyboard and Mouse Locker - Lock Keyboard and Mouse!
Dreamboard - DreamBoard lets you take control over the homescreen of your jailbroken iPhone.