WifiInfoView scans the wireless networks in your area and displays extensive information about them, including: Network Name (SSID), MAC Address, PHY Type (802. It is a freeware wireless analyzing application that's reliable, advanced and professional.
Here are some screenshots to illustrate the features and user interface of this application:
Homedale WiFi
Intel PROSet/Wireless WiFi Software
TekWiFi
Wireless Network Watcher
SoftPerfect WiFi Guard