Best traffic / performance / usage monitoring module?

Question

Are there any open source (or I guess commercial) packages that you can plug into your site for monitoring purposes? I\'d like something that we can hook up to our ASP.NET s

Answer 1

@Ian

Looks like they've raised the limit. Not very surprising, it is google after all ;)

This free version is limited to 5 million pageviews a month - however, users with an active Google AdWords account are given unlimited pageview tracking.

http://www.google.com/support/googleanalytics/bin/answer.py?hl=en&answer=55543