Wellenreiter is a wireless network discovery and auditing tool. Prism2, Lucent, and Cisco based cards are supported. It is the easiest to use Linux scanning tool. No card configuration has to be done anymore. The whole look and feel is pretty self-explaining. It can discover networks (BSS/IBSS), and detects ESSID broadcasting or non-broadcasting networks and their WEP capabilities and the manufacturer automatically. DHCP and ARP traffic are decoded and displayed to give you further information about the networks. An ethereal/tcpdump-compatible dumpfile and an Application savefile will be automaticly created. Using a supported GPS device and the gpsd you can track the location of the discovered networks. NO!, hosap drivers actualy don't work in the perl version.
The project has started to move from perl to C++. Currently there are two "flavours" of Wellenreiter available. One is the perl/gtk based Version, with all the described functionality. The second one is the Wellenreiter II C++ based flavour. This runs on Handhelds (Zaurus/Ipaq/etc.) within the Opie environment and on X11.