AWStats Official Web Site - Compile and generate advanced graphical web, ftp or mail statistics with a logfile analysis (For IIS, Apache,... distributed under GNU GPL).

Countly is a web analytics platform that you can deploy on-premises or in a private cloud. Some of the web analytics features include; Visitor profiles and individual visitor level reporting, goal completion tracking via funnels, retention analysis, heatmaps, campaign attribution and custom event tracking.