Functioning Form - SxSW: OSX and Longhorn Development Designers who were in on the process of developing OS X and Longhorn talked at a recent SxSW conference about why these operating systems look the way they do. I haven't read the whole transcript yet, but from what I've seen this appears to be refreshingly honest and straightforward from both camps. (SxSW=South by Southwest Conference) Of course, it's odd that "Longhorn" is discussed as having been completed in the same way that the 5-year-old Mac OS X is.