The Unicornscan port scanner can be used to gather and correlate network and OS information. It was built for security testing and research communities. The tool was designed according to the acronym SAFE – Scalable, Accurate, Flexible, and Efficient. Unicornscan is widely used because of its many scanning capabilities, as well as uncommon network discovery patterns, which provides unique alternative methods to explore details about remote operating systems and services.

Unicornscan Website