Nmap also known as Network Mapper falls in the category of a port scanner tool. This free and open source hacking tool is the most popular port scanning tool around that allows efficient network discovery and security auditing. Used for a wide range of services, Nmap uses raw IP packets to determine the hosts available on a network, their services along with details, operating systems used by hosts, the type of firewall used, and other information.
Supported platforms and download:
Nmap is available for all major platforms including Windows, Linux, and OS X.
Kod:
https://nmap.org/