The Unarchiver full review
Three guesses what The Unarchiver does. This open-source application may be unimaginatively named, but it does what it says on the tin. Essentially, it’s a replacement for OS X’s built-in de-archiving tool BOMArchiveHelper.app, introduced in 10.3. If you’ve never heard of that, it’s not surprising – it’s a service application that’s invoked when you try to open an archived document on your Mac: a ZIP, TAR or BOM file, for example. It doesn’t have a GUI – it just works.
The Unarchiver integrates into OS X in a similar way, expanding the range of archive file types your Mac can open. And what a parade of file-types it supports. Some are essential, including RAR, HQX, SIT and the Windows CAB format. Others are less important. It handles ZIP, TAR and GZIP too.
The application has a rudimentary configuration dialogue that enables you to associate specific filetypes with it; as many or few as you like. The preferences dialogue also allows you to designate which folder archives are extracted to. This lets you specify a dedicated folder for extracted archives or let all archives open in the source file’s current folder.