KisMAC is an open-source and free WiFi stumbler/scanner application for Mac OS X. It has an advantage over MacStumbler/iStumbler/NetStumbler in that it uses monitor mode and passive scanning.
FEATURES PEOPLE LIKE MOST
All of the internal AirPort Extreme hardware is supported as well.Features:
- Reveals hidden/cloaked/closed SSIDs
- Shows logged in Clients (with MAC Addresses, IP addresses and signal strengths)
- Mapping and GPS support
- Can draw area maps of network coverage
- PCAP import and export
- Support for 802.11b/g
- Different attacks against encrypted networks
- Deauthentication attacks
- AppleScript-able
- Kismet drone support (capture from a Kismet drone)
Supported hardware chipsets:
- Apple AirPort Extreme
- Ralink rt2570 and rt73 USB devices
Crypto support:
- Bruteforce attacks against LEAP, WPA and WEP
- Weak scheduling attack against WEP
- Newsham 21-bit attack against WEP
Just try it! Explore the secret to optimizing your Mac with very simple and intuitive steps.