New Kid on the block: AirStumbler reiht sich in die Reihe von OSX-WLAN-Tools ein:

Airstumbler is a wireless network discovery tool for Macintosh. Developed out of neccessity, AirStumbler is an essential tool for any wireless enthusiast. Developed by Doss of Nexus 9. (nexus9.org) Features include:

Accurate Stumbling Results
Built-In WEP And Non-WEP Network Joining
Auto Joining For Non-WEP Networks
WEP Compatibility For:

Apple Password:
40 Bit HEX
64 Bit HEX
104 Bit HEX
128 Bit HEX

Immediate Dropping Of Current Wireless Connection
AirPort Card Power Control
Logging Of All Encountered Access Points
Stats About Currently Connected Wireless Network
Easy To Use Interface

Kommt sicherlich nicht an KisMac heran, solls bestimmt auch nicht. Nette GUI, den Rest muss man mal sehen