secureSWF is a robust Adobe`s Flash and Flex actionScript obfuscator. It protects your SWF files from decompilers through the most advanced protection and obfuscation techniques. It also helps you protect your Flash application against a variety of security threats by providing encrypted domain locking, encrypted loader creation, and literal strings encryption.

irrFuscator is an ActionScript 3 obfuscator. It can protect .SWF files as well as .AS and .MXML files. irrFuscator is available for the command line but also comes with a convenient GUI frontend. It is able to encrypt strings, strip whitespace, does nondeterministic obfuscation and automaticly detects references to external flex code.