Vistumbler is a Wi-Fi network scanning tool that can scan an entire wireless network providing details and more.
Vistumbler takes advantage of the Windows Native WiFi API for collecting wireless information as well as for locating access points. It will verify network configurations and assist with unauthorized access point detection.
Vistumbler uses WLAN standards like IEEE 802.11a, 802.11b, and 802.11g to find the Wireless LANs. There are 3 options to use a GPS with Vistumbler. Kernel32 is the recommended com interface since it supports both x32 and x64. You can try CommMG if that interface does not work which should also work with x32 and x64 (but is slightly less stable). There is also Netcomm OCX, which requires the NETCommOCX ActiveX control to be installed first (Netcomm will only install in x32. Some people have gotten it to work with x64). GPS receivers need to be serial based and show up as a COM port.