NetWorx is a simple and free software, however powerful that can help you objectively evaluate your bandwidth situation. You can use it to collect data and measure the speed bandwidth use the internet or your network connection. NetWorx 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.
This program allows you to monitor all your network connections or a specific network connection (such as Ethernet or PPP). The software also comes with a visual and sound warning system is highly customizable. You can set it to alert you when the network connection is decreased or there is some suspicious activity such as large data streams unusual. This software can also automatically disconnect all dialup connections and shut down the system.
Incoming and outgoing traffic is represented on a line chart and logged to a file, so you can always view statistics along with bandwidth usage daily, weekly, and monthly and duration of dial-up. Reports can be exported to various formats, such as HTML, MS Word, and Excel for further analysis