Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
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.
Linux temperature web monitor - This is a simple monitor for temperature, fans, cpu and gpu usage; made for the powerful linux
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
PowerShell - Download WMF. Windows Management Framework contains the latest versions of PowerShell, DSC, WMI, and WinRM for older versions of Windows. PowerShell Module Browser. Search for PowerShell modules and cmdlets.
Better Uptime - We call you when your website goes down