Or its RAR plugin is already built into an archiver and included in its price.

Even if you download a third-party archiver, whose developers claim that it can create archives in the RAR format, you will have to download and install WinRAR separately to activate this function. No other archiver can do that (or rather it isn’t allowed by the RAR license). The biggest advantage of WinRAR for Mac OS X is the creation of RAR format archives. And it is this version the developers release the new archiver updates without delays in. Nevertheless, WinRAR for Mac OS exists, and working with the command line requires some special knowledge. Which is very weird, since the system created by Apple - as well as many other products of that company - is focused first and foremost on making the interaction of users with the machines easy. The developers allow the Mac users to work with RAR and UnRAR modules only from the command line. WinRAR for Mac OS X - as well as the Linux version - doesn’t have a GUI. WinRAR creators made sure the users of all the popular modern operating systems have their own version of the file archiver.

Rarlab mac