Springtomize - Tear down the walls
TextNow - TextNow is a mobile virtual network operator (MVNO) that provides a free phone service to users by using other cellular networks coverage.
Winterboard - Give your iPhone or iPod Touch a graphical overhaul!
Dingtone - Dingtone is a free call and texting application for making unlimited calls and text messages to any number at the moment registered in any part of the world by any cellular company.
Five Icon Dock - Tweaks the dock of your jailbroken iPhone so that it can fit five icons instead of four.
TextMe - TextMe is a free calls and messaging application at both local and international levels.