I built several flash applications for my last employer, some ran on the internet, some did not.

They are still using the wordsmart challenge.  The stand alone version of the software is still their flagship product.  I did not use any third party products for data storage, but chose to use flash Shared Objects to store, manage, and, display data. All of this was done in AS 2.0. I am familiarizing myself with AS 3.0 and I am sure I could handle a project using 3.0.