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.
Cylinder - Sexy homescreen icon animations
netcat - Netcat is a featured networking utility which reads and writes data across network connections...
SwitcherMod - SwitcherMod lets you customize the iOS4 multitasking bar.
Ettercap - Ettercap is a suite for man in the middle attacks on LAN.