CASA Lib (formerly CASA Framework) is a flexible ActionScript library for coding more reliable & faster.
It provides a core set of classes, interfaces, utilities & has AS2 – AS3 versions.
It standardizes the loading of external files with an easy-to-use and consistent API.
And, it has a powerul garbage collection with a common destroy(); method.
CASA Lib has lots of features that can “almost always” help in a Flash coding task.
The library is also well-documented with explanations/examples of every class & utility.