Winsock Tracer is a freeware utility that lets you trace Winsock 2 calls. Winsock Tracer gives you an idea of how applications use Winsock 2. You can trace any application that uses Winsock 2, for example, Netscape, Outlook Express, Napster or your own applications. Winsock Tracer creates a logfile containing information such as function names, arguments and return values.

Winsock Tracer is Windows 95/98/ME/NT/2000/XP compatible.

More info
Read more in the online manual.