these libraries are so out of date now … the list from dev.twitter… and at least one I know is failing now. Tweetr by Sandro Duccesschi… It has an incorrect URL in the oAuth.as library ( about line 62 ) and I can’t recompile to swc from the sources. There are probably other changes needed now too.
ActionScript/Flash
TwitterScript by Michael Galpin. AS3 API, originally from Twitter, now open sourced.
SWX Twitter API by Aral Balkan.
Tweetr by Sandro Duccesschi. AS3, supports the REST API, Search API, and URL shortening.
Coderanger by Dan Petitt. Flex/Air OAuth library class.
Is anyone going to bring out an official AS3 release?