DcomSoft has released SWF Protector 3.0 (http://www.dcomsoft.com/), an update of their SWF file protection utility for Mac OS X 10.4 and higher. The upgrade supports CS5 and Flash 10, as well as offering other fixes and enhancements.
SWF Protector helps you protect your SWF files via various protection algorithms. Plus, you can customize your protection in different ways.
SWF Protector costs US$39.95 for a single user license. A business license for one user is $59.95, and a company license is $299.95.