Greensole - Step towards sustainability
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.
eclipso - A safe home for people and their data.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
F5 Networks - F5 application services ensure that applications are always secure and perform the way they should—in any environment and on any device.
Better Uptime - We call you when your website goes down