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.
VMware vCenter - VMware vCenter Server provides a centralized platform for managing your VMware vSphere environments.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
AWS CloudFormation - AWS CloudFormation gives developers and systems administrators an easy way to create and manage a...
Better Uptime - We call you when your website goes down
Datto - Datto protects essential business data for tens of thousands of the world's fastest growing companies, delivering uninterrupted access to data on site, in transit, and in the cloud.