Kim Jong-Un with his iMac.

Apple's critics regularly complain about making its products too locked down, about how you have to go through the App Store to get software. But Apple's 'walled garden' looks positively open compared to Red Star OS, the leaked operating system of North Korea.

Welcome to Macintosh is produced by Mark Bramhill. Thanks to Kolin Pope and Josh Swartz for help editing today's episode. Music is by the mysterious Breakmaster Cylinder.