Hatchet is a log parsing and viewing utility for OpenBSD’s PF firewall software. It presents HTML output of logged events and utilization graphs using pfstat.
You can download it from the following link: https://packetstormsecurity.com/files/download/32602/hatchet-0.6.1.tar.gz
Source: https://packetstormsecurity.com/files/32602/hatchet-0.6.1.tar.gz.html