links for 2007-08-27 iindigo3d » Mac OS Through the Years “Mac OS is now 21 years old! Here’s a quick look at how much it has changed.” (tags: Apple Mac osx history gui software) Share this:Click to share on Twitter (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)