Editing OSF/1 (section)

{{short description|Variant of the Unix operating system developed by the Open Software Foundation}}
{{Infobox OS
| name                   = OSF/1<!-- Name of program or distribution -->
| logo                   = <!-- filename only (no wikilink, no Image:/File:) -->
| logo caption           = 
| logo size              = 
| logo alt               = 
| screenshot             = <!-- filename only (no wikilink, no Image:/File:) -->
| caption                = 
| screenshot_size        = 
| screenshot_alt         = 
| collapsible            = 
| version of             = <!-- For articles about releases of operating systems ONLY -->
| developer              = [[Open Software Foundation]]<!-- Name of main developer or sponsor-->
| family                 = [[Unix]]<!-- "Unix-like" or "Microsoft Windows" -->
| working state          = Discontinued<!-- "Current", "Discontinued" (operating systems), or "No longer supported" (releases) -->
| source model           = <!-- "Open source", "Closed source", or "Shared source" -->
| released               = {{Start date and age|1992|1}}
| discontinued           = <!-- DON'T use this for articles about releases of operating systems -->
| RTM date               = <!-- {{Start date and age|YYYY|MM|DD|df=yes/no}} ONLY for articles about OS releases -->
| GA date                = <!-- {{Start date and age|YYYY|MM|DD|df=yes/no}} ONLY for articles about OS releases -->
| latest release version = 
| latest release date    = 
| latest preview version = 
| latest preview date    = <!-- {{Start date and age|YYYY|MM|DD|df=yes/no}} -->
| marketing target       = 
| programmed in          = 
| language               = [[English language|English]]<!-- Supported human languages (English, French, Italian, Arabic, ...) -->
| update model           = <!-- APT, Windows Update, etc. -->
| package manager        = <!-- dpkg, rpm, Windows installer, etc. -->
| supported platforms    = [[MIPS architecture|MIPS]], [[DEC Alpha]], [[PA-RISC]]<!-- IA-32, x64, Itanium, ARM, etc. -->
| kernel type            = Hybrid,<ref name="dtj1993winter_chang"/> [[Microkernel]]<ref name="byte199401_kernels"/><!-- Hybrid, Monolithic, Microkernel, Exokernel, Nanokernel, etc. -->
| userland               = 
| ui                     = 
| license                = 
| preceded by            = 
| succeeded by           = 
| website                = <!-- {{URL|www.example.org}} -->
| support status         = <!-- For articles about releases of operating systems ONLY -->
| other articles         = 
| prog_language          = 
}}
'''OSF/1''' is a variant of the [[Unix]] [[operating system]] developed by the [[Open Software Foundation]] during the late 1980s and early 1990s. OSF/1 is one of the first operating systems to have used the [[Mach kernel]] developed at [[Carnegie Mellon University]], and is probably best known as the native Unix operating system for [[DEC Alpha]] architecture systems.

In 1994, after AT&T had sold [[UNIX System V]] to [[Novell]] and the rival [[Unix International]] consortium had disbanded, the Open Software Foundation ceased funding of research and development of OSF/1. The [[Tru64 UNIX]] variant of OSF/1 was supported by [[Hewlett-Packard|HP]] until 2012.