Are you searching for a free and easy way to extract RAR files on a Mac? Then you need to check out a free software called Zipeg. Available for both Windows and Mac OS X users, Zipeg acts as a universal file opener for .zip or .rar files allowing you to see the contents of the compressed archive with only the click of a button.
Though Zipeg is best known for its .rar and .zip support that is not all it can open. If you are trying to open .7z, .tar, .gz, tgz, .bzip2, .iso, .cbr, .cbz, .arj, .lha, .lzh, . cpio, .rpm, .chm, .z, .war, or .ear file types you will be able to easily do so using Zipeg. The built-in password decryption allows you to open password protected files given you know the password.
Zipeg is 100% free to download and use although they do accept donations for those of you who feel as though you want to give back to the developers for making sure a great product for free.