ActionScript 3 Libraries is a set of open source ActionScript 3 development kits for Flexer and Flasher. It based on BSD then very friendly for business users. At present, it include following components ( Personally I appreciate the corelib and FlexUnit more):
These people who need to do the financial statemens maybe will feel so headche for the precision numbers and complex calculations. But the Flex has strong performance on making statements. There is a open source package name is Money on fxcomps.com. It claims that “The Money library (version: 1.3.1) is developed for calculating with arbitrary-precision signed decimal numbers and money.” If you have the problem on money why not try it at once?