Kannel - Open Source WAP and SMS Gateway
SmartSniff - SmartSniff is a packet sniffer that capture TCP/IP packets and display them as sequence of conversations between clients and servers.
Ozeki NG SMS Gateway - Ozeki NG SMS Gateway is a powerful, reliable and flexible SMS Gateway application.
netcat - Netcat is a featured networking utility which reads and writes data across network connections...
KAPSYSTEM - KAP Computer Solutions Pvt. Ltd.,
Ettercap - Ettercap is a suite for man in the middle attacks on LAN.