Flash AS3/Frameworks

There's a ton of development frameworks for as3 out there now. Thought I would start the list.

Robot Legs - http://www.robotlegs.org/
AS3 Signals - http://github.com/robertpenner/as3-signals
Gaia - http://www.gaiaflashframework.com/
Progression - http://progression.jp/en/overview/
PureMVC - http://puremvc.org/


I personally only have used PureMVC and I just started using Gaia, which I like for setting up basic type of EPK sites. Anyone else have a preference?

Cairngorm is what I use on the Flex Side.