ClearLock - A transparent screen locker.
iNoJB - iNoJB, formerly iNoCydia, is an amazing Cydia alternative requiring no jailbreak!
BlueLife KeyFreeze - FREE Windows application that blocks your keyboard and mouse without “locking” the screen.
Apple App Store - Install apps on your iDevice via the App Store.
VBLock - Converged Infrastructure
Cydia - An alternative app store for jailbroken devices.