KisMAC is an open-source and free stumbler/scanner application for Mac OS X. It has an advantage over MacStumbler/iStumbler/NetStumbler in that it uses monitor mode and passive scanning. KisMAC supports several third party PCMCIA cards - Orinoco, PrismII, Cisco Aironet, Atheros and PrismGT. USB Prism2 is supported as well, and USB Ralink support ... More info »
Wireshark (previously Ethereal) is a versatile network protocol analyzer and packet sniffer.
inSSIDer is an award-winning free Wi-Fi network scanner for Windows Vista and Windows XP. Because NetStumbler doesnt work well with Vista and 64-bit XP, we built an open-source Wi-Fi network scanner designed for the curr ...
Packetyzer provides a Windows userinterface for the Ethereal packet capture and dissection library. Ethereal is used by network professionals around the world for troubleshooting, analysis, software and protocol developm ...
iStumbler is the leading wireless discovery tool for Mac OS X, providing plugins for finding AirPort networks, Bluetooth devices and Bonjour services with your Mac.
We know an awful lot about software but not everything. We would be happy if you could tell us with a few words why is not an alternative to .