Mist - Mist is a Multi-Cloud Management Platform - Streamline operations + Optimize costs across public & private clouds, hypervisors & containers.
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.
Bulletproof - Bulletproof is a cloud provider, providing Managed Cloud services to business, enterprise and government customers.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Scalr - Scalr is cloud management software for public & private infrastructure
Better Uptime - We call you when your website goes down