MarchingAntsSelect
From the site:
This is a simple ActionScript 3 implementation of the class marching ants selection marquee you find in applications such as Photoshop.
The class is based off this ActionScript 2 example here; http://www.nocircleno.com/experiments/selection_ants_proof/index.html, but adds in many more methods and is entirely self contained. Drawing the bitmaps for the marquee internally in the class.
Features
Either Fixed or user drawn marquee
Draggable or static fixed marque
Programatically changeable marquee colours
Programatically changeable marquee line thickness
Does not rely on library assets for marquee
http://www.blog.noponies.com/archives/80
TransformManager
TransformManager makes it easy to add interactive scaling/rotating/moving of DisplayObjects to your Flash or Flex application. It uses an intuitive interaction style that’s similar to most modern drawing applications. When the user clicks on a managed DisplayObject, a selection box will be drawn around it along with 8 handles for scaling/rotating. When the mouse is placed just outside of any of the scaling handles, the cursor will change to indicate that they’re in rotation mode. Just like most other applications, the user can hold down the SHIFT key to select multiple items, to constrain scaling proportions, or to limit the rotation to 45 degree increments. TransformManager is available in AS2 and AS3.