ServerSuit - ServerSuit is a browser based program that enables remote Linux administration, monitoring, website hosting, and server setup automation.

GPU-Z - GPU-Z is a lightweight system utility designed to provide vital information about your video card...

RedGate SQL Monitor - SQL Monitor helps you and your team find issues – before they become problems

CPU-Z - CPU-Z is a freeware that gathers information on some of the main devices of your system : Processor name and number, codename, process, package, cache levels.

Nagios - Complete monitoring and alerting for servers, switches, applications, and services

Speccy - Speccy - find the details of your computer's specs. Great for spotting issues or finding compatible upgrades. Download the latest version free.