High Quality Content by WIKIPEDIA articles! The Workplace Shell (WPS) is a object-oriented desktop shell produced by IBM`s Boca Raton development lab for OS/2 2.0. It is based on Common User Access and made a radical shift away from the Program Manager type interface that earlier versions of OS/2 shared with Windows 3.x or the application-oriented WIMP interface of the Apple Macintosh. The Workplace Shell was also used in OS/2 Warp 3 and Warp 4, and is still the user interface of the revamped successor to OS/2 called eComStation of Serenity Inc.