
Kismon
GUI client for kismet (wireless scanner/sniffer/monitor)
20 Alternatives To Kismon
AirRadar
Scanning for wireless networks is now easier and more personalized!
Baidu WiFi Hotspot
Turn your PC into a hotspot for mobile devices.
Ethereal
Ethereal® is used by network professionals around the world for troubleshooting, analysis…
Homedale
With Homedale you can search for Wi-Fi / WLAN Access Points and monitor their signal strength.
Kismet
Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system.

NetSpot
NetSpot is a free app for wireless site surveys, Wi-Fi analysis, and troubleshooting
NetStumbler
Official source of information about Netstumbler.

Technitium MAC Address Changer
Technitium MAC Address Changer (TMAC) is a freeware utility to instantly change or spoof MAC Address of any network card (NIC).

WiFi Monster
WiFi Monster is a Wi-Fi discovery tool for PocketPC and Windows Mobile.

Wifi Analyzer
Wifi Analyzer is a handy tool which helps you to select a better channel for your wireless router.

Wifiner - WiFi Analyzer
WiFi Analyzer. See your WiFi signal on a visually comprehensive map and make sure you are getting the best of your network

Wifite
To attack multiple WEP, WPA, and WPS encrypted networks in a row.

Wireshark
Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.
Xirrus Wi-Fi Inspector
Due to its powerful WiFi management system, Xirrus Wi-Fi Inspector now becomes the standard for assisting the people in finding the solution of all of their WiFi related issues.
hostapd
hostapd is a user space daemon for access point and authentication servers. It implements IEEE 802.
iStumbler
Handcrafted Tools for Better Computing