Normalerweise benötigt man einen der bekannten Compiler ( z.B. Flash IDE, FlashDeveloper, MTASC, Flex Builder), um Flashfilme (.swf) zu erstellen. Eine Alternative ist der Online-Compiler wonderfl.
With wonderfl, you write Actionscript3 code in the html form on this website, and our server compiles your code.
You’ll see warnings, errors from the compiler and your Flash will be automatically shown besides your code.
Write code and watch it in action, realtime.
Link: wonderfl.kayac.com
Hier noch ein ActionScript-Online-Compiler.
"This project, currently named ActionScript MiniBuilder, features code assist (code completion) for ActionScript 3 and compilation of one-file AS3 SWF. It runs in your browser, you only need Flash Player 10 and Java. The code assist part is written in pure ActionScript. The compiler runs in a Java applet."
http://www.victordramba.com/?p=31