A friend of mine pointed me to this video I forgot. Steve Jobs demonstrating the features of NeXTSTEP 3.0 back in 1992.

You’ve probably noticed the strong similarities with Mac OS X. Steve Jobs actually never changed its vision of modern computing. It took him 10 years to come back with Mac OS X and finally succeed.

Mac OS X is built from pieces of NeXTSTEP and share a part of its architecture. If you’re familiar with Cocoa programming — the native Mac OS X application framework — you’ve probably noticed that class names are all prefixed by “NS”; guess why?