What is "openwindows"

OpenWindows was a desktop environment for Sun Microsystems workstations which combined SunView, NeWS, and X Window System protocols. OpenWindows was included in later releases of the SunOS 4 and Solaris operating systems, until its removal in Solaris 9 in favor of Common Desktop Environment (CDE) and GNOME 2.0.

OpenWindows implemented the OPEN LOOK GUI specification. OpenWindows comprised four components: the OPEN LOOK Window Manager ( olwm), the DeskSet productivity tools, the XView and OLIT widget toolkits, and the underlying X11/NeWS window server.