DComSoft has released SWF Protector 4.0 (http://www.dcomsoft.com/), an update of their SWF file protection utility for Mac OS X. The new version offers a new protection engine for ActionScript 3.0.
SWF Protector is designed to protect Flash files from all kinds of SWF decompilers. It fully protects ActionScript code, so your artwork is impossible to steal, according to the folks at DComSoft. It uses three different protection algorithms that allow SWF file playback in Flash Player, but conceal the source code completely. Version 4.0 features numerous improvements ensuring even more stable and reliable SWF protection.
The main improvement to SWF Protector 4.0 for Mac is its new protection engine for ActionScript 3.0: SWF Protector 4.0 for Mac now encrypts ActionScript 3.0 from all known decompilers.
A personal license of SWF Protector 4.0 costs US$39.95. A business license is $59.95, and a company license is $299.95.