Stuffit Expander used to be an essential application to have on your Mac, just so you could uncompress all those SIT, SITX or ZIP files. Nowadays though, more and more applications come as DMG files, which can be opened up without the need of an external application.
Stuffit Expander is still useful if you work with many different types of archive formats.
The application is extremely easy to use, as all you need to do is drag and drop any archive file onto the interface to uncompress it.
Stuffit Expander takes charge of 25 different archive formats, with all the popular ones supported. The speed at which the process completes really depends on the size of your file.
You can even use it to uncompress archives encrypted with 512 and AES 256-bit protections.
While Stuffit Expander can be a bit buggy every now and then, it's a nifty tool to have around in case you get sent an archive file.