FileMagic: The Best Way to Open and Manage RAR Files. Do you find it hard to open RAR files or manage other file types that your system doesn't support? FileMagic simplifies your life by providing an easy way to open and manage RAR files along with other formats. https://www.filemagic.com/en/compressed-files/rar-file-extension/rar-files-what-it-is-and-how-to-open-it/