Stackify Retrace - Stackify Retrace is an application performance management platform for .NET and Java developers.
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.
Sheetlist - Discover free Google Sheets for marketing, finance and more
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
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.
Better Uptime - We call you when your website goes down