So Apple releases source code to a 35-year-old OS. Good that they did it, but really? 35 years? I’d be more interested in the MacPlus system 6 source code or the MS-DOS 5 source code. Surely there’s no competitive advantage to keeping either of those closed any longer.
http://www.osnews.com/story/27417/Computer_History_Museum_releases_Apple_II_DOS_source_code