Wireless Access Point Utilites for Unix - it's a set of utilites to configure and monitor Wireless Access Points under Unix using SNMP protocol. Utilites knownly compiles by GCC and IBM C compiler and run under Linux, FreeBSD, NetBSD, MacOS-X, AIX, QNX, OpenBSD.
http://ap-utils.polesye.net/

Hopefully will be of some use to ppl here.

Also, check out:

http://prismstumbler.sourceforge.net/

Frontend ported to GTK2.
Split in front- and backend for easier usage and improved stability.
Simple FakeAP detection .
Support for Orinoco- and HostAP driver.
Automatic driver detection.
Binary packages for Familiar Linux (iPAQ)