Springtomize - Tear down the walls
AppRecs - AppRecs sorts through reviews in the App Store and automatically helps you filter out inauthentic results.
Winterboard - Give your iPhone or iPod Touch a graphical overhaul!
Cydia - An alternative app store for jailbroken devices.
Dreamboard - DreamBoard lets you take control over the homescreen of your jailbroken iPhone.
Fnd - Browse Apple App Store and iTunes on the Web