Comment Re:bias? (Score 1) 174
I'd like to direct you at the Flex SDK, which is FOSS:
http://opensource.adobe.com/wiki/display/flexsdk/Flex+SDK
As far as Flex goes, The most complicated UI element that you don't have source for is the Sprite element, which is analogous to a Canvas in HTML/JS...
Now, linux on Flash has been buggy, it's true... but it has been improving over the years, at least it isn't getting worse.
(on re-read, it appears that you were talking about 'security controls', which I'm not sure I understand... what security controls do browsers provide, that Flash doesn't benefit from (and constrained by)? In fact, Flash had additional XSD protection LONG before HTML/JS ever did.. though crossdomain.xml is horrible, it's at least possible to setup in 15 mins, unlike HTML/JS Same-Origin crap.)