NetWorx is a free, easy to use, powerful tool that helps you objectively evaluate your bandwidth situation. Collect bandwidth usage data and measure the speed of your Internet or any other network connection!
This program allows you to monitor all your network connections or a specific network connection,such as Ethernet or PPP only. It can help you identify possible sources of network problems, ensure that you do not exceed the bandwidth limits specified by your ISP, or track down suspicious network activity characteristic of Trojan horses and hacker attacks. There is also a system of highly customizable visual and sound alerts which can be set up to alert you when the network connection is down or when some suspicious activity, such as unusually heavy data flow, occurs. It can also automatically disconnect all dial-up connections and shut down the system.
Download "networx_portable.zip" and extract it into a folder of your choice. Then run "networx.exe".