StuffIt Expander for Mac
Apple's built-in Archive Utility manages to satisfy the needs of most Mac users, but if you still work with .sit and .sitx archives you might need to use Stuffit Expander.
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.
In addition, Stuffit Expander enables you to open protected ZIP archives that use strong 512-bit or AES 256-bit encryption.
In order to install Stuffit Expander you have to download and mount the DMG file and copy the app to your Mac's Applications folder. Although Stuffit Expander is a simple decompression tool, it requires 54.9 MB of your Mac's hard disk space.
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. Before starting the extraction process, Stuffit Expander will ask you to choose the destination directory for the extracted files.
Stuffit Expander is pretty quick and automatically creates a surrounding folder when the archive contains more than one item. However, you can disable or enable this option form the Preferences window.
Also from Stuffit Expander's Preferences window you will be able to chose an output directory for all your future tasks and enable or disable options such as "Reveal in Finder", "Move archives to Trash" or "Mount disk images".
If you want to decompress large files and you need to know when the process is complete you can enable the Growl notifications or use the mail notification feature.
Another time-saving feature provided by Stuffit Expander is the option to assign certain formats only to Stuffit Expander.
All in all, Stuffit Expander is a powerful and user-friendly utility that enables you to decompress a wide variety of archive formats.