AS3 Scale9 Bitmap
AS3 Scale9 Bitmap is class that lets you create scale9 sprites with bitmap data fill – originally this was not possible in Flash 9. The class creates a “fake” scale 9 sprite containing 9 shapes that scale according to user-defined scaling matrix. Extremely useful for quick user interface work (creating buttons, scalable UI elements etc.)
http://www.uza.lt/codex/as3-scale9-bitmap/
AS3 Embeded
Embeded is an easy way to embed image assets into your AS3 project.
http://www.uza.lt/codex/as3-embeded/
AS3 Easing
Easing is a Singleton that lets you do dynamic point-to-point property tweening. It is able to manipulate virtually any property of any object on or off the stage.