iOS doesn't have public code names the way OS X does, but it does have internal code names and they're all shades of awesome cool.

I'm a sucker for code names. They're so Bond. While Apple doesn't use public code names for iOS the way the company does for OS X — no big cats like Snow Leopard or California landmarks like El Capitan — it does use internal code names primarily based on ski resorts. They're not meant for the public but, once a version of iOS goes public, they're not hard to find.

  • 1.0: Alpine (1.0.0 - 1.0.2: Heavenly)
  • 1.1: Little Bear (1.1.1: Snowbird, 1.1.2: Oktoberfest)
  • 2.0: Big Bear
  • 2.1: Sugarbowl
  • 2.2: Timberline
  • 3.0: Kirkwood
  • 3.1: Northstar
  • 3.2: Wildcat (iPad only)
  • 4.0: Apex
  • 4.1: Baker
  • 4.2: Jasper (4.2.5 - 4.2.10: Phoenix)
  • 4.3: Durango
  • 5.0: Telluride
  • 5.1: Hoodoo
  • 6.0: Sundance
  • 6.1: Brighton
  • 7.0: Innsbruck
  • 7.1: Sochi
  • 8.0: Okemo
  • 8.1: OkemoTaos
  • 8.2: OkemoZurs
  • 8.3: Stowe
  • 8.4: Copper
  • 9.0: Monarch
  • 9.1: Boulder
  • 9.2: Castlerock
  • 9.3: Eagle
  • 10.0: Whitetail

While knowing these names doesn't add to the feature set of the software, it does add a little depth to the experience. And because they're technically secret code names, they're ever so much cooler than desserts.

More code names

Via: iPhone Wiki