AsDoc (AS3 Doc Generating Tool) on Labs
We just released a version of AsDoc on labs. AsDoc is a tool that generates API documentation from ActionScript 3 classes. It is the tool we use the generate the Flex 2 and AS3 API docs, as well as all of the ActionScript 3 open source library docs.
You can find more information, as well as download the bits from the AsDocs Labs page.