Squidly1, a friend, pointed this out a couple weeks ago (I'm only now catching up). Wicrawl is an access point auditor that was relased at Toorcon 2006. It has a "simple and flexible plugin architecture". The current list of plugins can be viewed here.
The video of the Toorcon 2006 presentation can be viewed here (hi-res), here (lo-res), or downloaded here (note: slow download).
There is a claim that the tool will be included in the next Backtrack CD which, BTW, has a beta of BT 2.0 out. There is also a training site for BT and a demo video for the new disk.