KisMAC is a stumbler application for Mac OS X that puts your card into monitor mode. Unlike most other applications for OS X, it is completely invisible and sends no probe requests.
You can download it from the following link: https://packetstormsecurity.com/files/download/32919/KisMACcursrc.tgz
Source: https://packetstormsecurity.com/files/32919/KisMACcursrc.tgz.html