AirMoose is a native network stumbling application for OS X.
Current features are:
Built-In Network Joining (WEP and Non-WEP). 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. Logging Of All Encountered Access Points. Awesome Moose-y goodness. Current status indication. Universal Binary. Stats About Currently Connected Wireless Network. Audio Notification of Network Discovery. Easy To Use Interface. Growl support.