The Flash Developers worst nightmare is here, we knew it wouldnt be long before our flash mx .swf files were at the mercy of the decompiler. The first 3rd Party Software Application to decompile Flash MX .swf files is Actionscript Viewer 3 by Burak. You can now decompile the bytecode back into readable format A.K.A Actionscript from any .swf file, Flash 4, Flash 5 or Flash MX.