THC-WarDrive v2.0 is a linux based tool for mapping your city for wavelan networks with a GPS device while you are driving a car or walking through the streets. It is effective and flexible, supporting NMEA GPS devices.
You can download it from the following link: https://packetstormsecurity.com/files/download/25321/wardrive-2.0.tar.gz
Source: https://packetstormsecurity.com/files/25321/wardrive-2.0.tar.gz.html