TCP Spy .NET is a tiny tool for monitoring TCP packets between a server and a client for .NET web services and websites. It makes it easy to identify any network problems and track bandwidth utilization.
This software is a 4-in-1 tool that serves as a monitoring tool, web service / web site profiling tool, redirection server, and a network / web site/ web services spy. The software boasts of several features like being light (one file only), small (less than 1 meg), rich and easy user interface, auto update, and free.
In terms of monitoring, TCP Spy .NET allows you to monitor connection IP address, connection destination, and opened connection, along with logging connections and requests to the file. You can suspend monitoring without any service interruption, flagging the connection/request for easier tracking, and insert a grid marker for easier tracking. Additionally, you can view and clear log files.
TCP Spy .NET also features profiling where it profiles Web Service calls, durations, bytes in, bytes out, and Url content and size. You can get stats about the Web Service and Url in terms of calls, duration, bytes in, and bytes out. You can also pause profiling without interrupting communication, get the size and duration of each request, and view request details for each connection.
The software also features a redirection server where you can configure port and IP redirection. Additionally, you can inspect bytes in data, inspect bytes out data, inspect header and raw data, and view HTTP header.
In summary, TCP Spy .NET is an all-in-one software that offers a wide range of features that are useful for monitoring, web services / web site profiling, and redirection server, along with several network / web site / web services spying options. The software is incredibly easy to use with its intuitive and user-friendly interface, and it is a free tool that is certainly worth having in your arsenal.
Version 4.1:
Added a message if unable to start the trace
Added the url extension in the connection grid (jpg, htm, zip...)
Added more cache
Fixed auto update
Added a close confirmation
Version 4.0:
New UI look
New web site profile mode
Vista support
Version 3.0:
Automatic update
New detail navigation in the statistics
New log file view
New request view
New summary view in the statistics
New chart in the statistic view
New compare summary
New web site profiling mode
New compare modes
New statistics