TCP Spy .NET is a small application used to trace TCP packets between a client and a server. Optimized for.Net Web Services or Web Site TCP Spy .NET will help you find any bottleneck and it will help you in analyzing your bandwidth usage. With TCP Spy .NET, you can inspect data in different views, track server calls or just redirect the host.
The unregistered version does not provide the option of sending data to a file, and only keeps 32KB of data in the scrollable text box. When you register TCP Spy, you will be sent a code that enables the additional features.