MyFunnyDev

http://examples.adobe.com/flex3/componentexplorer/explorer.html

This is still work in progress. It’s based on the TileList component.

You can play with it here:

1. Adobe Style explorer
2. Effects explorer
3. Flip/Rotate/… explorer
4. Primitive explorer
5. Filter explorer

I’ve just found new ActionScript 3 Framework. Prana includes IOC container similar to Spring + reflection utils and more…
You can find more info on author’s blog

Chris Giametta wrote about how to connect all of the above together.

update:
Christophe Coenraets shows how to use flex with Spring here
Peter Martin describes how to deploy flex on WebSphere here