IISTracer is a real-time internet web site monitoring tool for Microsoft IIS (all versions). The software lets you show what is happening on IIS server. You can see or log state of each request, incoming/outgoing bytes, http headers and several request running times.
IISTracer shows a state of running scripts (.asp, .aspx, asp.net, .cfm, .php, .cgi, etc), applications (.dll, .exe, ..) and a big downloads (.mp3, .zip, ...).
It lets you also monitor what script or which client (IP) hangs-up your server.