This interface is very reminiscent of the old Macintosh Programmer's Workshop approach called "Commando" wish assisted users in building command lines for all command line tools in this unix style development system under Mac OS 9. With that said, Apple should be ashamed if itself for not providing precisely this kind of interface for command line tools in UNIX. This is exactly the way a command line tool should be 'macified', nicely done! The action of the tool produces a thread of nmap execution in a separate window with the equivalent command line as part of the window frame. This is handy as there are times when performing the same scan two weeks later or even from an AppleScript tool (using the doscript verb) might be the objective. In this regard NmapFE allows the user to refine the execution of Nmap painlessly until the exact command line is developed and stored.