Log Reader  

This gets your IIS logs and then formats them into a readable format for you to view.

Hosting Requirements: Windows
Price: Free

   SiteLog ASP.NET Standard  

SiteLog ASP.NET allows the tracking of each individual who visits your site and provides comprehensive analysis in real-time. All your statistics are compiled and presented in a very nice, and easy-to-use, standard web interface. Reports include Peak Usage, Country and Language Distribution, and Browser Profiles.

Hosting Requirements: WIndows NT/ 2000/ XP
Price: $89

   StatMentor.NET  

Pretty simple script for getting and seeing visitor statistics. StatMentor gives you reports on total no of visitors; pageviews, per day and per page; refering pages and their count.

Hosting Requirements: Windows
Price: Free