OpenFlux is an MVC (Model-view-controller) framework for developing Flex components.
Ben Stucki created the project after being inspired by a presentation Ely Greenfield gave at MAX Barcelona.
Videos of the Flex Roadmap session (courtesy of Joso Fernandes) are well worth the watch.
If you're interested in playing with (or just learning more about) OpenFlux head on over and check out the source. I just added a wiki page explaining how to compile OpenFlux into a SWC if you need help getting started.