Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
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.
Microsoft IIS - Internet Information Services is a web server for Microsoft Windows
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.
Better Uptime - We call you when your website goes down