Website Grader - Grade your website's strengths and weaknesses in seconds.
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.
Smaller - Make your websites load faster
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Treo - Treo is the page speed monitoring tool that helps your customers from obtaining a faster web experience.
Better Uptime - We call you when your website goes down