On a Mac computer, you can open zip files without installing any extra software. Compressing and uncompressing zip files has been part of a Mac's built-in software for years.

When you open a RAR file on your Mac, it will turn into a folder where you can access all of the decompressed files. Visit Business Insider's homepage for more stories.

When you double-click a file on your Mac, the operating system will automatically open the file using the program assigned to that type of file. It is possible, though, to open the file using ...