Wake On LAN Ex 2 - Free software from Joseph (AKA BootBlock) of http://www.bootblock.co.uk
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.
Advanced Port Scanner - Advanced Port Scanner is a fast and free software for port scanning.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
WOL Magic Packet Sender - A free magic packet sender for Windows - wake-up computers with the touch of a button.
Better Uptime - We call you when your website goes down