GnoScan is a multi-threaded network scan and security utility with an intuitive graphical user interface. It runs under GNOME. This is not the world’s first port scanner, but certainly one of the most easy ones to use.
You can download it from the following link: https://packetstormsecurity.com/files/download/25371/GnoScan-0.1.2.tar.gz
Source: https://packetstormsecurity.com/files/25371/GnoScan-0.1.2.tar.gz.html