ServerSuit - ServerSuit is a browser based program that enables remote Linux administration, monitoring, website hosting, and server setup automation.
Wake On LAN Ex 2 - Free software from Joseph (AKA BootBlock) of http://www.bootblock.co.uk
RedGate SQL Monitor - SQL Monitor helps you and your team find issues – before they become problems
Advanced Port Scanner - Advanced Port Scanner is a fast and free software for port scanning.
Nagios - Complete monitoring and alerting for servers, switches, applications, and services
gWakeOnLan - gWakeOnLan is a GTK+ utility to awake turned off computers through the Wake on LAN feature.