BsdScan is a light-weight port-scanner designed for the BSD operating system. It currently supports scanning single hosts, subnets, logging results, scanning ports in a random order, specifying a port range, and a speed option to only scan commonly used ports.
You can download it from the following link: https://packetstormsecurity.com/files/download/10942/bsdscan-0.4.tar.gz
Source: https://packetstormsecurity.com/files/10942/bsdscan-0.4.tar.gz.html