GO Locker - GO Locker,design to GO Launcher EX is the most simple locker for Android!
Springtomize - Tear down the walls
Artispoon Lock Screen - The app lets you secure your phone while you enjoy artworks of professional artists on your lock...
Transparent Screen Lock - Password protect your workstation or server with "Transparent Screen Lock" while monitoring programs that are running.
Winterboard - Give your iPhone or iPod Touch a graphical overhaul!
ClearLock - A transparent screen locker.