Springtomize - Tear down the walls
Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.
Winterboard - Give your iPhone or iPod Touch a graphical overhaul!
netcat - Netcat is a featured networking utility which reads and writes data across network connections...
Five Icon Dock - Tweaks the dock of your jailbroken iPhone so that it can fit five icons instead of four.
Ettercap - Ettercap is a suite for man in the middle attacks on LAN.