Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
PuTTY - Popular free terminal application. Mostly used as an SSH client.
Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
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
iTerm2 - A terminal emulator for macOS that does amazing things.