Hyper-V - Install Hyper-V on Windows 10
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.
vSphere - Get started with VMware vSphere editions, the world’s leading server virtualization platform and the best foundation for your apps, your cloud, and your business.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Proxmox VE - Proxmox is an open-source server virtualization management solution that offers the ability to manage virtual server technology with the Linux OpenVZ and KVM technology.
Better Uptime - We call you when your website goes down