PortMapper - Do you need to map a specific TCP or UDP port on your machine to another port on another machine?
Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
netcat - Netcat is a featured networking utility which reads and writes data across network connections...
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
Komodia Relay - Free open source tool to perform TCP based session relay
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.