It's an extremely fast and flexible network auditing kit.The main part is a wind-fast portscanner, which is specially designed for large networks.

All the information about host ports may be saved or automatically logged to a file with the different detail level and copied to clipboard in different ways.Pack includes: Whois client, that supports automatic information recognition and fetch, has query history and other features; Traceroute, that traces all the way to the host at once in one or two seconds; DNS client that supports most of the available questions, including AXFR zone transfer.