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.
GtkStressTesting - GtkStressTesting or GST is a system utility designed to test and monitor various hardware components.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Mactracker - Mactracker provides detailed information on every Apple Macintosh computer ever made, including...
Better Uptime - We call you when your website goes down
EtreCheck - EtreCheck is a simple little app to display the important details of your system configuration and...