iNoJB - iNoJB, formerly iNoCydia, is an amazing Cydia alternative requiring no jailbreak!
GO Locker - GO Locker,design to GO Launcher EX is the most simple locker for Android!
Apple App Store - Install apps on your iDevice via the App Store.
Muse Art - Muse mission is to transform the lock screen into a tool of discovery and inspiration.
Cydia - An alternative app store for jailbroken devices.
Keyboard and Mouse Locker - Lock Keyboard and Mouse!