IP Traffic Monitor can help you to watch your network activity and see which connections take a lot of traffic. Also saves daily logs and allows you to view the saved logs.

It includes a full-featured sniffer. You can easily capture and analyze TCP packets. Captured packets can be saved to a log file or analyzed in place. For example, you can analyze HTTP requests including passwords and other data that is sent to servers from your PC.

The license of this software is Free Trial Software, the price is $29.95, you can free download and get a free trial.