WakeMeOnLan - Turn on computers on your local area network by sending Wake-on-LAN packets.
Advanced Port Scanner - Advanced Port Scanner is a fast and free software for port scanning.
MiniWOL - miniWOL, a free and easy application (Windows, Linux and MacOS) to send a Wake On LAN to your network device(s), so you can wake them up from your computer.
Wake On LAN Ex 2 - Free software from Joseph (AKA BootBlock) of http://www.bootblock.co.uk
WOL Magic Packet Sender - A free magic packet sender for Windows - wake-up computers with the touch of a button.
Zabbix - Track, record, alert and visualize performance and availability of IT resources