*no comment* writes "the folks over at OSviews have a nicely done article that explains the evolution of NeXTSTEP into Mac OS X. 'With the beginning of 1996, Apple realized that with the next generation PC's running Windows NT to be released within the decade, they would need a new, modern operating system to run on their machines. ... Amongst Apple's other options were to license Solaris from Sun, NT from Microsoft, or to purchase a small net services company called NeXT. Apple chose the latter.'" OSNews had another nice Mac-oriented look at NeXTSTEP last year; the Wikipedia entry is also worth looking through.