1. A consortium of computer companies that promotes standards and publishes specifications for programs operating on computers that run UNIX OSF is perhaps best known for designing OSF Motif, a graphical user interface (GU1) for UNIX that provided much of the design inspiration for Microsoft Windows 95. OSF also developed the OSF Distributed Computing Environment (DCE) (a set of programs that supplement a vendor's operating system and enable cross platform network intqroperability and the OSF/I operating system, a publicly available variant of UNIX. See proprietary. From QUECID