PingPlotter Standard is a lightweight network troubleshooting, diagnostic and monitoring tool. It can run in the background collecting data while you continue to run applications and then allow you to quickly look at the data in an intuitive graphical format when you experience problems (reduced call quality for VoIP, slowdowns or disconnects with applications, etc.).
PingPlotter allows you to "See the network", and "Pinpoint problems" by taking traceroute, ping, and whois to a new level. It's fast, and the graphical aspects make it easy to quickly see where a problem is occuring. Alerts, statistics, and numerous other features give the you the extra power you need to find and troubleshoot problems.
pro version is all you could hope for in a ping plotter. Very professional tool.