Darwin is an open-source Unix operating system released by Apple Inc.
IPFilter
IPFilter (commonly referred to as ipf) is an open-source software package that provides firewall services and network address translation (NAT) for many Unix-like operating systems.
Ultrix
Ultrix (officially all-caps ULTRIX) is the brand name of Digital Equipment Corporation's (DEC) discontinued native Unix operating systems.
OpenServer
OpenServer, previously SCO UNIX and SCO Open Desktop (SCO ODT), is a closed source computer operating system developed by Santa Cruz Operation (SCO), later acquired by SCO Group, and now owned by Xinuos.
BSD licenses
BSD licenses are a family of permissive free software licenses, imposing minimal restrictions on the redistribution of covered software.
DYNIX
DYNIX (dynamic unix) is a discontinued operating system developed by Sequent Computer Systems.
386BSD
386BSD, sometimes called "Jolix", was a free Unix-like operating system based on BSD, first released in 1992.
DEMOS
DEMOS (meaning "Dialogovaya Edinaya Mobilnaya Operatsionnaya Sistema" (Диалоговая Единая Мобильная Операционная Система, ДЕМОС), or "Interactive Unified Portable Operating System") was a Unix-like operating system developed in the Soviet Union.
OpenStep
OpenStep is an object-oriented application programming interface (API) specification for a legacy object-oriented operating system, with the basic goal of offering a NeXTSTEP-like environment on a non-NeXTSTEP operating system.
SunOS
SunOS is a Unix-branded operating system developed by Sun Microsystems for their workstation and server computer systems.
MirOS BSD
MirOS BSD (originally called MirBSD) is a free and open source operating system which started as a fork of OpenBSD 3.
RISC iX
RISC iX is a discontinued Unix operating system designed to run on the Acorn Archimedes.
ULE scheduler
ULE is the default scheduler for the FreeBSD operating system (versions 7.1 and forward) for the i386 and AMD64 architectures.
NeXTSTEP
NeXTSTEP is a discontinued object-oriented, multitasking operating system based on UNIX.
BSD/OS
BSD/OS (originally called BSD/386 and sometimes known as BSDi) was a proprietary version of the BSD operating system developed by Berkeley Software Design, Inc.
Berkeley Software Distribution
Berkeley Software Distribution (BSD) is a Unix operating system derivative developed and distributed by the Computer Systems Research Group (CSRG) of the University of California, Berkeley, from 1977 to 1995.
PacBSD
PacBSD (formerly known as Arch BSD) is an operating system based on Arch Linux, but uses the FreeBSD kernel instead of the Linux kernel and the FreeBSD userland instead of the GNU userland.
IXsystems
iXsystems, Inc. is a privately owned American computer technology company based in San Jose, California that develops, sells and supports computing and storage products and services.
Gentoo/Alt
Gentoo/Alt is a Gentoo Linux project created to manage porting the Portage framework and other features to other operating systems, such as Mac OS X and the free BSDs.
Berkeley Software Design
Berkeley Software Design Inc.
Rhapsody (operating system)
Rhapsody was the code name given to Apple Computer's next-generation operating system during the period of its development between Apple's purchase of NeXT in late 1996 and the announcement of Mac OS X in 1998.
NextBSD
NextBSD is an operating system initially based on the trunk version of FreeBSD as of August 2015.
MachTen
MachTen is a Unix-like operating system from Tenon Intersystems.
Nagare (web framework)
Nagare is a free and open-source web framework for developing web applications in Stackless Python.
MacMach
MacMach is a computer operating system from the early 1990s, developed by Carnegie Mellon University.
IBM Academic Operating System
Academic Operating System (AOS) was IBM's version of 4.
Darwin is an open-source Unix operating system released by Apple Inc.
IPFilter
IPFilter (commonly referred to as ipf) is an open-source software package that provides firewall services and network address translation (NAT) for many Unix-like operating systems.
Ultrix
Ultrix (officially all-caps ULTRIX) is the brand name of Digital Equipment Corporation's (DEC) discontinued native Unix operating systems.
OpenServer
OpenServer, previously SCO UNIX and SCO Open Desktop (SCO ODT), is a closed source computer operating system developed by Santa Cruz Operation (SCO), later acquired by SCO Group, and now owned by Xinuos.
BSD licenses
BSD licenses are a family of permissive free software licenses, imposing minimal restrictions on the redistribution of covered software.
DYNIX
DYNIX (dynamic unix) is a discontinued operating system developed by Sequent Computer Systems.
386BSD
386BSD, sometimes called "Jolix", was a free Unix-like operating system based on BSD, first released in 1992.
DEMOS
DEMOS (meaning "Dialogovaya Edinaya Mobilnaya Operatsionnaya Sistema" (Диалоговая Единая Мобильная Операционная Система, ДЕМОС), or "Interactive Unified Portable Operating System") was a Unix-like operating system developed in the Soviet Union.
OpenStep
OpenStep is an object-oriented application programming interface (API) specification for a legacy object-oriented operating system, with the basic goal of offering a NeXTSTEP-like environment on a non-NeXTSTEP operating system.
SunOS
SunOS is a Unix-branded operating system developed by Sun Microsystems for their workstation and server computer systems.
MirOS BSD
MirOS BSD (originally called MirBSD) is a free and open source operating system which started as a fork of OpenBSD 3.
RISC iX
RISC iX is a discontinued Unix operating system designed to run on the Acorn Archimedes.
ULE scheduler
ULE is the default scheduler for the FreeBSD operating system (versions 7.1 and forward) for the i386 and AMD64 architectures.
NeXTSTEP
NeXTSTEP is a discontinued object-oriented, multitasking operating system based on UNIX.
BSD/OS
BSD/OS (originally called BSD/386 and sometimes known as BSDi) was a proprietary version of the BSD operating system developed by Berkeley Software Design, Inc.
Berkeley Software Distribution
Berkeley Software Distribution (BSD) is a Unix operating system derivative developed and distributed by the Computer Systems Research Group (CSRG) of the University of California, Berkeley, from 1977 to 1995.
PacBSD
PacBSD (formerly known as Arch BSD) is an operating system based on Arch Linux, but uses the FreeBSD kernel instead of the Linux kernel and the FreeBSD userland instead of the GNU userland.
IXsystems
iXsystems, Inc. is a privately owned American computer technology company based in San Jose, California that develops, sells and supports computing and storage products and services.
Gentoo/Alt
Gentoo/Alt is a Gentoo Linux project created to manage porting the Portage framework and other features to other operating systems, such as Mac OS X and the free BSDs.
Berkeley Software Design
Berkeley Software Design Inc.
Rhapsody (operating system)
Rhapsody was the code name given to Apple Computer's next-generation operating system during the period of its development between Apple's purchase of NeXT in late 1996 and the announcement of Mac OS X in 1998.
NextBSD
NextBSD is an operating system initially based on the trunk version of FreeBSD as of August 2015.
MachTen
MachTen is a Unix-like operating system from Tenon Intersystems.
Nagare (web framework)
Nagare is a free and open-source web framework for developing web applications in Stackless Python.
MacMach
MacMach is a computer operating system from the early 1990s, developed by Carnegie Mellon University.
IBM Academic Operating System
Academic Operating System (AOS) was IBM's version of 4.
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