Web site: (not active)
Origin: USA
Category: Server
Desktop environment: CLI
Architecture: , DEC Alpha, PA-RISC
Based on: Unix
Wikipedia: OSF/1
Media: Install
The last version | Released: 3.0 | August 1994
OSF/1 (Open Software Foundation 1) – an operating system released by the OSF (Open Software Foundation) in 1990. It is a UNIX that uses Mach as its kernel.
The Open Software Foundation, Inc. (OSF), was a not-for-profit industry consortium for creating an open standard for an implementation of the operating system Unix. It was formed in 1988 and merged with X/Open in 1996, to become The Open Group.
The purpose of OSF/1 was to compete with System V Release 4 from AT&T Corporation and Sun Microsystems. One of the main goals was that the operating system would contain no AT&T intellectual property.
After AT&T sold UNIX System V to Novell in 1994 and the rival Unix International consortium disbanded, the Open Software Foundation stopped funding research and development of OSF/1.
In February 1995, OSF/1 AXP was renamed Digital UNIX by DEC with release 3.2. After the acquisition of DEC by Compaq in 1998, Digital UNIX was known as Tru64 UNIX from release 4.0F in 1999. After the acquisition of Compaq by HP in 2002, the Tru64 variant of OSF/1 was supported by HP until 2012.
History of OSF, UI, and USL
– 1986: IEEE/POSIX Standards Committee
– May 1988: OSF established. IBM, Hewlett-Packard (HP), DEC, and others form OSF.
– November 1988: AT&T and Sun Microsystems establish Unix International (UI).
– 1989: UNIX Systems Laboratories (USL) announces UNIX System V Release 4.
– 1990: OSF/1 1.0 released.
– 1991: Novell invests in USL.
– 1993: Novell acquires USL.
– 1994: X/Open and OSF merge into The Open Group.
