Macstumber is an application for Mac OS X which scans and detects wireless networks using an Airport card. No driver installation needed.
You can download it from the following link: https://packetstormsecurity.com/files/download/30852/MacStumbler-06b.tgz
Source: https://packetstormsecurity.com/files/30852/MacStumbler-06b.tgz.html