other flex framework

http://www.adobe.com/devnet/flex/articles/blueprint.html

http://www.model-glue.com/flex.cfm

http://www.servebox.com/foundry/doku.php

http://www.guasax.com/blog/

http://labs.adobe.com/wiki/index.php/Cairngorm

http://puremvc.org/

http://osflash.org/projects/arp