iNoJB - iNoJB, formerly iNoCydia, is an amazing Cydia alternative requiring no jailbreak!
SmartWindows.app - Auto arrange all your app windows, whether on one screen or many with a single click!
Apple App Store - Install apps on your iDevice via the App Store.
ReIcon - ReIcon is portable freeware that enables you to save and restore your desktop layout.
Cydia - An alternative app store for jailbroken devices.
VC Starter Kit - Everything you need to look like a Venture Capitalist