Vistumbler

Vistumbler - Free Wi-Fi security tool

Vistumbler 10.11 is Stumbler's first open source tool released in 2007 and most recently updated in 2010. It displays basic details such as APs, including authentication methods and code. accuracy, and can even display the AP's SSID and RSSI.

Similar to NetStumbler, you can view a list of all APs or sort by authentication, encryption, channel, network type, SSID. You can also look at the graph of the AP signals next to see text readouts. It is highly customizable and offers very flexible configuration options. In addition to basic GPS support for recording AP locations, it also supports direct tracking in applications using Google Earth. However, unlike NetStumbler, Vistumbler only gives you signal levels and does not include noise levels.