PortPing

It will ping a port to see if its open.

Yes, you can just telnet to an IP, and specify a port. But this lets you do it continuosly.

Usage, porting hostname port

eg, portping server 3389

Great for after you have reboot a server thats behind a firewall (that you cannot ping), but there is a port forward to 3389 (RDP), then you can tell when its back up, without all the trying and trying. A massive time saver for all

download from here: http://www.mediafire.com/file/ygj5yzmkowe/Portping.exe