OS/2

OS/2 is a computer operating system, initially created by Microsoft and IBM, then later developed by IBM exclusively. The name stands for "Operating System/2", because it was introduced as part of the same generation change release as IBM's "Personal System/2 (PS/2)" line of second-generation personal computers.

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 * During the next 10 years, millions of programmers and users will utilise this system.
 * Bill Gates, November 1988, in the Foreword to the Inside OS/2 book by Gordon Letwin, Microsoft's architect for OS/2


 * In the summer of 1988, I received an interesting call from Bill Gates at Microsoft. He asked whether I'd like to come over and talk about building a new operating system at Microsoft for personal computers. [...] What Bill had to offer was the opportunity to build another operating system, one that was portable [...].
 * Dave Cutler in his introduction to the book Inside Windows NT