Editing List of operating systems (section)

====Other proprietary Unix-like and POSIX-compliant====
* [[Domain/OS|Aegis]] ([[Apollo Computer]])
* [[Amiga Unix]] (Amiga ports of Unix System V release 3.2 with Amiga A2500UX and SVR4 with Amiga A3000UX. Started in 1990, last version was in 1992)
* [[Coherent (operating system)|Coherent]] ([[Unix-like]] OS from Mark Williams Co. for PC class computers)
* [[DC/OSx]] (DataCenter/OSx&mdash;an operating system developed by [[Pyramid Technology]] for its [[MIPS architecture|MIPS]]-based systems)
* [[DG/UX]] (Data General Corp)
* [[DNIX]] from [[DIAB]]
* DSPnano RTOS (POSIX nanokernel, DSP Optimized, Open Source)
* [[HeliOS]] developed and sold by [[Perihelion Software]] mainly for [[transputer]]-based systems
* [[Interactive Unix]] (a [[porting|port]] of the [[UNIX System V]] [[operating system]] for [[x86|Intel x86]] by [[Interactive Systems Corporation]])
* [[IRIX]] from [[Silicon Graphics|SGI]]
* [[MeikOS]]
* [[NeXTSTEP]] (developed by [[NeXT]]; a Unix-based OS based on the [[Mach (kernel)|Mach]] microkernel)
* [[OS-9]] [[Unix-like]] [[Real-time operating system|RTOS]]. (OS from [[Microware]] for [[Motorola 6809]] based microcomputers)
* OS9/68K [[Unix-like]] [[Real-time operating system|RTOS]]. (OS from [[Microware]] for [[Motorola 68000 series|Motorola 680x0]] based microcomputers; based on [[OS-9]])
* [[OS-9000]] [[Unix-like]] [[Real-time operating system|RTOS]]. (OS from [[Microware]] for [[Intel]] x86 based microcomputers; based on [[OS-9]], written in [[C (programming language)|C]])
* [[OSF/1]] (developed into a commercial offering by [[Digital Equipment Corporation]])
* [[OPENSTEP]]
* [[QNX]] (POSIX, microkernel OS; usually a real time embedded OS)
* [[Rhapsody (operating system)|Rhapsody]] (an early form of Mac OS X)
* [[RISC iX]] – derived from BSD 4.3, by Acorn computers, for their [[ARM architecture|ARM]] family of machines
* [[MIPS RISC/os|RISC/os]] (a port by [[MIPS Technologies]] of [[4.3BSD]] for its [[MIPS architecture|MIPS]]-based computers)
* [[RMX (operating system)|RMX]]
* [[SCO UNIX]] (from [[Santa Cruz Operation|SCO]], bought by Caldera who renamed themselves [[SCO Group]])
* [[SINIX]] (a port by [[Siemens Nixdorf Informationssysteme|SNI]] of [[Unix]] to the [[MIPS architecture]])
* [[Solaris (operating system)|Solaris]] (from Sun, bought by Oracle; a System V-based replacement for SunOS)
* [[SunOS]] (BSD-based Unix system used on early Sun hardware)
* [[SUPER-UX]] (a port of [[UNIX System V|System V Release 4.2MP]] with features adopted from [[Berkeley Software Distribution|BSD]] and [[Linux]] for [[NEC SX architecture]] [[supercomputer]]s)
* [[UNIX System V|System V]] (a release of AT&T Unix, 'SVR4' was the 4th minor release)
* [[Microport (software)|System V/AT, 386]] (The first version of AT&T System V UNIX on the IBM 286 and 386 PCs, ported and sold by [[Microport (software)|Microport]])
* [[Trusted Solaris]] (Solaris with kernel and other enhancements to support [[multilevel security]])
* [[UniFLEX]] ([[Unix-like]] OS from [[Technical Systems Consultants|TSC]] for DMA-capable, extended addresses, Motorola 6809 based computers; e.g. [[SWTPC]], [[Gimix]] and others)
* [[Unicos]] (the version of Unix designed for Cray Supercomputers, mainly geared to vector calculations)
* UTX-32 (Developed by Gould CSD (Computer System Division), a Unix-based OS that included both BSD and System V characteristics. It was one of the first Unix based systems to receive NSA's C2 security level certification.){{Citation needed|date=April 2019}}
* [[Zenix]], Zenith corporations Unix (a popular USA electronics maker at the time){{Citation needed|date=April 2019}}