Process Lasso - Process Lasso is NOT yet another task manager.
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.
AnVir Task Manager - This tool controls programs, disk, CPU. Replace task manager, tweak and tune up XP or Vista.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
cpulimit - CPU Usage Limiter for Linux - cpulimit is a simple program which attempts to limit the cpu usage of...
Better Uptime - We call you when your website goes down