SPstats is a statistics software for SharePoint 2007 & 2010 by MAPILab.
On the website they describe the product:
"is a solution for web analysis, networking analysis, and workflow audit. It is a source of administrative information on the performance of SharePoint-based Intranet-portals and websites."
If you have any experience with SPstats, please share your experience below or send it to info@IntraTeam.dk if you prefer anonymity