PuTTY - Popular free terminal application. Mostly used as an SSH client.
Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
DuoRDP - DuoRDP is a tool that used to quick connect to multiple windows server
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Lterm - Lterm is a terminal emulator for GNU/Linux systems.
Better Uptime - We call you when your website goes down