Linked by Thom Holwerda on Mon 25th Nov 2013 17:43 UTC

The Ars Technica article on OS/2 mentions, in passing, Workplace OS, the pie-in-the-sky successor to OS/2 IBM was working on. I found this fantastic journal article written by Brett D. Fleisch and Mark Allan A. Co, which goes into this failed project in great detail.

IBM's Microkernel, named Workplace OS microkernel, was the core components of Workplace OS, a portable successor of OS/2. The basic premise of Workplace OS work was: 1) IBM would adopt and improve the CMU Mach 3.0 microkernel for use on PDAs, the desktop, workstations, and massively parallel machines, and 2) that several operating system personalities would execute on the microkernel platform concurrently. This architecture would allow users to switch between applications written for different operating systems while IBM would also benefit by having one common platform for all product lines. The goals of the microkernel and the technical features of design are described in this paper. We also present lessons that may benefit future projects with similar goals.

Also, I get to use the IBM icon!

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Remember it from BYTE's coverage
by StephenBeDoper on Tue 26th Nov 2013 18:36 UTC
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An old issue of BYTE that I have kicking around (April 94) has an article on IBM plans for the PReP platform - and it had a few mentions of WorkPlace OS:

Operating System Issues

The IBM Power Personal Systems Division intends to have three operating systems availabile for its systems when they start shipping: AIX, Windows NT, and Workplace OS with OS/2 personality.
Workplace OS is a new operating system, although IBM has been working on it for years and has extensive experience with it on Intel platforms. With over 400 people working to bring it up on Power Personal hardware, IBM thinks it can include Worplace OS with the initial systems.

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