CowAxess is a GoAccess implementation for Windows systems. It is a packaging of GoAccess, Cygwin and many other related tools to make it a complete and ready-to-use solution for real-time web log analysis.
GoAccess is an open source real-time web log analyzer and interactive viewer that runs in a terminal or through your browser. It provides fast and valuable HTTP statistics for system administrators. Cygwin is a Linux-like environment for Windows. It consists of a DLL (Cygwin1.dll), which emulates substantial Linux API functionality, and a collection of tools.