Net Analyzer captures and decodes packets passing through your Ethernet adaptor. The main advantages, which makes it different, better and much more flexible than other packet analyzers/"sniffers" are:
the possibility of defining your own
packet formats (highly extensible)
the packet filtering system,
the packet visualization capabilities.
Capturing packets
Defining packet formats
Trace visualization and saving
For the latest news, versions, etc. check the web page at
http://members.xoom.com/netanalyzer/