Systray icon - Network status checker

[Kennin]

I know, this is not really an interface request, but I think that it should be rather easy for a programmer to make a little tool that sits in the Systray, which pings some selected server(s) every now and then, and shows if it is online (green) or offline (red). Of course, if the logon server is down, it should be red anyhow.

Or is there something like this already, and am I just using bad search strings?