Its a little known fact that OSX Mountain Lion comes with a Builtin wireless scanner. This scanner comes in quite handy when surveying available wifi access points. To use this scanner, simply open a terminal window and type:
open /System/Library/CoreServices/Wi-Fi\ Diagnostics.app
This will open the primary Diagnostic window:
You can just ignore this window. Next press Command + N. This will open up the Wifi Utilities Window:
Now click the "Wi-Fi Scan" button at the top and your scan will start automatically:
