SwitcherMod - SwitcherMod lets you customize the iOS4 multitasking bar.
ClearLock - A transparent screen locker.
Five Icon Switcher - This puts more icons into the iOS4 multitasking bar, instead of the usual four.
BlueLife KeyFreeze - FREE Windows application that blocks your keyboard and mouse without “locking” the screen.
Springtomize - Tear down the walls
GO Locker - GO Locker,design to GO Launcher EX is the most simple locker for Android!