CoolMon

This thing is pretty cool. It’s got plug-in support too, so you can create little extensions to it. It says that it only supports XP, but I haven’t got around to testing it on Windows Server 2003. This looks like it would be pretty cool to put on a server. - David Stone

CoolMon is a program for monitoring vital system stats and almost anything else you wish to display on the desktop. It can also display stats from remote PC and publish real-time stats on a web page. The application can display CPU, RAM and page file usage, hard drive usage, MotherBoard Monitor temperatures and fan speeds, various network stats and much, much more.

I’m downloading this thing right now… It looks:

• really useful,
• really cool,
• it’s free ;-)