Mac App Store is the simplest way to find and download apps for your Mac.To download StuffIt Expander from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More. Description Note: An issue exists with using Applescript to expand an archive. We are working on a fix and apologize for the inconvenience. Please send technical support issues to http://www.stuffit.com/support/index.htm