Editing Single UNIX Specification (section)

===Currently registered UNIX systems===

====AIX====
[[IBM AIX|AIX]] version 7, at either 7.1 TL5 (or later) or 7.2 TL2 (or later) are registered as UNIX 03 compliant.<ref>{{cite web|author=The Open Group|title=UNIX 03, AIX|url=https://www.opengroup.org/openbrand/register/brand3637.htm}}</ref> AIX version 7, at 7.2 TL5 (or later) are registered as UNIX V7 compliant.<ref>{{cite web|author=The Open Group|title=UNIX V7, AIX|url=https://www.opengroup.org/openbrand/register/brand3658.htm}}</ref> Older versions were previously certified to the UNIX 95 and UNIX 98 marks.<ref name="2003-register">{{cite web|archive-url=https://web.archive.org/web/20030802103246/http://www.opengroup.org/openbrand/register/|url=http://www.opengroup.org/openbrand/register/|title=The Open Brand - Register of Certified Products|date=July 23, 2003|archive-date=August 2, 2003|access-date=January 23, 2022|website=Open Group}}</ref>

====HP-UX====
[[HP-UX]] 11i V3 Release B.11.31 is registered as UNIX 03 compliant. Previous releases were registered as UNIX 95.<ref>{{cite web|url=http://h21007.www2.hp.com/portal/download/files/unprot/STK/HPUX_STK/impacts/i1071.html|title=UNIX 2003 Standard Profile conformance|access-date=July 22, 2014|publisher=[[Hewlett-Packard]]|archive-url=https://web.archive.org/web/20140727044600/http://h21007.www2.hp.com/portal/download/files/unprot/STK/HPUX_STK/impacts/i1071.html|archive-date=July 27, 2014}}</ref>

====macOS====
[[Apple Inc.|Apple]] [[macOS]] (formerly known as Mac OS X and OS X) is registered as UNIX 03 compliant.<ref>{{cite web|url=https://images.apple.com/macosx/docs/OSX_for_UNIX_Users_TB_July2011.pdf|title=OS X for UNIX Users|date=July 2011}}</ref> The first version registered was [[Mac OS X Leopard|Mac OS X 10.5 Leopard]], certified on October 26, 2007 (on x86 systems).<ref>{{cite web|publisher=Apple Inc.|title=Mac OS X Leopard - Technology - UNIX|url=https://www.apple.com/macosx/leopard/technology/unix.html |work=Leopard Technology Overview|access-date=June 11, 2007|quote=Leopard is now an Open Brand UNIX 03 Registered Product, conforming to the SUSv3 and POSIX 1003.1 specifications for the C API, Shell Utilities, and Threads. |archive-url = https://web.archive.org/web/20070823040630/http://www.apple.com/macosx/leopard/technology/unix.html <!-- Bot retrieved archive --> |archive-date = August 23, 2007}}</ref><ref>{{cite web|author=The Open Group|title=Mac OS X Version 10.5 Leopard on Intel-based Macintosh computers certification|url=https://www.opengroup.org/openbrand/register/brand3555.htm|access-date=June 12, 2007}}</ref> All versions of [[macOS]] from Mac OS X Leopard to [[macOS Catalina|macOS 10.15 Catalina]], except for [[Mac OS X Lion|OS X Lion]],<ref>{{Cite web |title=Re: was OS X version 10.7 Lion UNIX 03 certified? |url=https://www.mail-archive.com/austin-group-l@opengroup.org/msg02006.html |access-date=2021-07-22 |website=www.mail-archive.com |archive-date=April 29, 2020 |archive-url=https://web.archive.org/web/20200429213555/https://www.mail-archive.com/austin-group-l@opengroup.org/msg02006.html |url-status=live }}</ref> have been registered on Intel-based systems, and all versions from [[macOS Big Sur|macOS 11 Big Sur]], the successor to macOS Catalina, up to [[MacOS Sequoia|macOS 15 Sequoia]] have been registered on both x86-64 and ARM64 systems.<ref>{{cite web |title=Open Brand |url=https://www.opengroup.org/openbrand/register/apple.htm |access-date=2025-05-18 |website=www.opengroup.org}}</ref>

====Xinuos====
[[UnixWare]] 7.1.3 and later is registered as UNIX 95 compliant.
[[OpenServer]] 5 and 6 are registered as UNIX 93 compliant.

====z/OS====
IBM [[z/OS]] 1.2 and higher is registered as UNIX 95 compliant.
z/OS 1.9, released on September 28, 2007, and subsequent releases "better align" with UNIX 03.<ref>{{cite book
  | url = https://www.redbooks.ibm.com/redbooks/pdfs/sg247427.pdf
  | title = z/OS Version 1 Release 9 Implementation
  | access-date = June 9, 2024
  | date = December 2007
  | pages = 4-5,156-162
  | publisher = IBM
  | id = SG24-7427-00
  | edition = First
}}</ref>