Introduction
Zenmap is the official Nmap Security Scanner GUI. It is a multi-platform(Linux, Windows, Mac OS X, BSD, etc.) free and open source applicationwhich aims to make Nmap easy for beginners to use while providingadvanced features for experienced Nmap users. Frequently used scanscan be saved as profiles to make them easy to run repeatedly. Acommand creator allows interactive creation of Nmap commandlines. Scan results can be saved and viewed later. Saved scan resultscan be compared with one another to see how they differ. The resultsof recent scans are stored in a searchable database.
You can download Zenmap (often packaged with Nmap itself) from the Nmap download page. Zenmap is quite intuitive, but you can learn more about using it from the Zenmap User's Guide or check out the Zenmap man page for some quick reference information.
Screen shots
Here are some Zenmap action shots (click for full res):
