Stuffit Expander is pretty quick and automatically creates a surrounding folder when the archive contains more than one item. Before starting the extraction process, it will ask you to choose the destination directory for the extracted files. Stuffit Expander features a well-designed interface that allows you to drag and drop the file you need to unarchive onto it's drop box. In addition, the app enables you to open protected ZIP archives that use strong 512-bit or AES 256-bit encryption. Stuffit Expander is a free and easy-to-use decompression utility that comes with support for over 30 different archive formats such as ZIP, RAR, 7Z, TAR, SIT, SITX and more. sitx archives you might need to use Stuffit Expander. Apple's built-in Archive Utility manages to satisfy the needs of most Mac users, but if you still work with.