There are many alternatives to Nmap for Mac if you are looking for a replacement. The best Mac alternative is Angry IP Scanner, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Nmap and 16 are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Nmap are Zenmap (Free, Open Source), MASSCAN (Free, Open Source), sn0int (Free, Open Source) and Fingbox (Paid).
Umit: The Nmap Frontend: Umit was designed to accomodate and run more than one scan at time. Each scan is executed and shown inside a Scan Tab, which has a title and organize every information obtained in the scan result.
NmapSi4 is a complete Qt4-based Gui with the design goals to provide a complete nmap interface for Users, in order to menage all option of this power security net scanner and search services vulnerability.
Rumble is a network discovery platform that enumerates the network topology, identifies devices, and creates an asset inventory. Rumble runs discovery scans via a locally installed agent or using the standalone Rumble Scanner on the command-line.