Server Monitor 

Server Monitor is a Windows service that monitors the health and availability of Windows servers, network services (on Windows, Linux and other operating systems), and devices. No agents are needed to monitor remote servers.
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Mihov DiskFree 

Mihov DiskFree is a program that shows free disk space in megabytes. It updates the information every second, so it is very useful with programs which consume very much disk space very fast (sound capture and video capture).
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