Information:
This GTK/Perl program makes finding and auditing 802.11b wireless networks easier. It has an embedded statistics engine for the common parameters provided by the wireless drivers, so you can view details about the consistency and signal strength of the network. A scanner window can be used to discover access-points, networks and ad-hoc cards.
This detects essid broadcasting or non-broadcasting networks in every channel, automatically switching frequencies.
This can run on low-resolution devices that can run GTK/Perl and Linux/BSD (such as iPaqs).