AnimationPackage helps you to create powerful and maintainable animations and basic primitive shapes in an efficient and easy way. At the same time it keeps your file size down because many parts of it are reused and only the classes you need are imported to your project. AnimationPackage is an ActionScript 2.0 library, it is compatible to Flash Player 6 and above, works with Flash, Flex and MTASC.

AnimationPackage website