Doc? is an Air application that allows you to view your documentation outside of your IDE.
It supports Flash CS3 documentation, Flash CS4, Flex and ASDoc.
Searching can be done by keyword or by regular expression!
Doc? provides two plugins, one for Flash and one for Eclipse (Flex, FDT etc..). These plugins send the selected text to Doc? and Doc? will search it's database for matching items.
I love it
Screenshot with the PV3D ASdocs imported: