AFreeSMS - AFreeSMS is a free web-based service that allows you to send unlimited free SMS messages online, no need to register, just type your message and send unlimited SMS to anywhere around the world for free.
netcat - Netcat is a featured networking utility which reads and writes data across network connections...
SendSMSnow - SendSMSnow is one of the best services over the internet that lets the users to send free SMS in any part of the world in addition to India.
PortMapper - Do you need to map a specific TCP or UDP port on your machine to another port on another machine?
Indyarocks Free SMS - Indyarocks Free SMS is listed among the most popular websites in India that offers their users to send as many SMS as they want.
Komodia Relay - Free open source tool to perform TCP based session relay