TCP Spy .Net Professional Edition 4.1 is a Network Monitoring Software product from devolutions.net, get 5 Stars SoftSea Rating, TCP Spy .NET is a small software 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.
Its a 4 in 1 tool:
- monitoring tool
- web service / web site profiling tool
- redirection server
- Network / Web Site / Web Services spy
Features - Standard Edition

1. General
Light and easy to deploy (one executable only)
Small (less than 2 meg)
Rich and easy user interface
Auto update
Compatible with Windows XP/2k3/Vista
Free
2. Monitoring
Monitor connection IP address
Monitor connection destination
Monitor opened connection
Log connections and requests to file
Suspend monitoring with no service interruption
Flag connection / request for an easier tracking
Insert grid marker for an easier tracking
View and clear log file
3. Profiling
Profile Web Service: calls, durations, bytes in, bytes out
Profile Url: content, size
Get stats about Web Service (calls, duration, bytes in, bytes out)
Get stats about Url (calls, duration, bytes in, bytes out)
Pause profiling without interrupting the communication
Get the size and the duration of the each request
View request details for each connections
Summary request view
4. Redirection server
Configure port redirection
Configure ip redirection
5. Network spy
Inspect bytes in / request data
Inspect bytes out / response data
Inspect header and raw data
View HTTP header

Features - Professional Edition

Hex data view
Decompressed data view with supoprt of gzip and deflate
Xml data view
Image data view
Content data view
Summary connection view
Syntax highlight in content view with support for CSS, Html and Javascript
Statistic view with chart grouped by Web Service, by content or by url
Trigger notification for unexpected data size or duration
Run in the tray icon
Tray icon balloon for trigger notification
Save and load profiled session
Compare profiled session
Resend to server received request
View all connections, active connections or detailled requests The license of this networking software is Free Trial Software, the price is $49.99, you can free download and get a free trial before you buy. If you want to get a full or nolimited version of TCP Spy .Net Professional Edition, you can buy this networking software.