Traceroute 

A nice FREE graphic replacement for the standard TRACEROUTE utility. Please enter the URL or IP address of the site of your interest in the program's edit field and click the START button. The program will show you IP packets trace from your local computer to the host you have entered.
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Alchemy Ping 

A nice FREE graphic replacement for the standard PING utility.
network management software network design software system monitoring software visual trace route system administration tool server monitoring tool website check event viewer nt administration snmp