Recently I read some article about a hidden / two year old Action Script 3.0 framework, which was pretty surprise. Thought of share with you all,
Name : Flight
Born : 2008
Here is an overview of Flight Framework,
About Flight Framework,
The Flight Framework is the evolution of an ActionScript framework that has been around for a few years. It was originally designed for web-based, design-centric applications such as product printers and book builders. Even now the framework ships with the CommandHistory – an entire solution for undo and redo – and other practical utilities that strengthen its offering.
Flight Framework maintains an emphasis on supporting capable clients: Flex and Flash applications that are much more than just pretty faces to server implementations. Through features like domains (modular MVC systems) and a prescribed structure, the framework transforms component scripting into real application development.
Hope this framework will add more values to your Flash / Flex applications development. 
Source,
Flight framework | Flightframework @ Google Code | Getting Started
