Editing Darwin (operating system) (section)

===Darwin 0–8 and corresponding Mac OS X releases===
{| class="wikitable mw-collapsible mw-collapsed"
|-
! Version
! style="width: 128px;" | Date
! style="width: 159px;" | Corresponding releases
! Notes
|-
! 0.1
| March 16, 1999
| rowspan="3" | Mac OS X Server 1.0 releases
|
* Initial release
* 0.1 is contrived (for sorting and identification) as this identified itself simply as Rhapsody 5.3
|-
! 0.2
| April 14, 1999
| Mac OS X Server 1.0.1
|-
! 0.3
| August 5, 1999
| Based on Rhapsody 5.5
* ISO image is available on [https://archive.org/details/Darwin0.3CDCaseFront archive.org]
* After this point the kernel changed from the NeXTSTEP/OPENSTEP/Rhapsody to the newer XNU for Mac OS X
|-
! 1.0
| April 12, 2000
|
| Developer preview 3
* ISO image is available on [https://archive.org/details/Darwin1.0 archive.org]
|-
! 1.1
| April 5, 2000
|
| Developer preview 4
|-
! 1.2.1
| November 15, 2000
| [[Mac OS X Public Beta]] (code-named "Kodiak")
|
|-
! 1.3.1
| April 13, 2001
| [[Mac OS X v10.0]] (code-named "Cheetah")
| 
* First commercial release of Darwin
* All releases of Cheetah (v10.0.0–4) had the same version of Darwin.
|-
! 1.4.1
| October 2, 2001
| rowspan="3" | [[Mac OS X v10.1]] (code-named "Puma")
|
* Performance improvements to "boot time, real-time threads, thread management, cache flushing, and preemption handling"
* Support for [[Server Message Block|SMB]] network file system
* [[Wget]] replaced with [[cURL]].<ref>{{cite web|url=https://developer.apple.com/technotes/tn/tn2029.html|title=Technical Note TN2029: Mac OS X v10.1|publisher=[[Apple Developer|Apple Developer Connection]]|archive-url=https://web.archive.org/web/20011114205940/http://developer.apple.com/technotes/tn/tn2029.html|archive-date=November 14, 2001}}</ref>
|-
! 5.1
| November 12, 2001
| Mac OS X v10.1.1
* Change in numbering scheme to match the [[macOS|Mac OS X]] build numbering scheme
|-
! 5.5
| June 5, 2002
| Mac OS X v10.1.5
|-
! 6.0.1
| September 23, 2002
| rowspan="2" | [[Mac OS X v10.2]] (code-named "Jaguar")
|
* [[GNU Compiler Collection|GCC]] upgraded from 2 to 3.1
* [[IPv6]] and [[IPSec]] support
* mDNSResponder [[service discovery]] [[daemon (computer software)|daemon]] ([[Bonjour (software)|Rendezvous]])
* Addition of [[CUPS]], [[Ruby (programming language)|Ruby]], and [[Python (programming language)|Python]]
* [[journaling file system|Journaling]] support in [[HFS+]] (Darwin 6.2)
* Application profiles ("pre-heat files") for faster program launching.<ref>{{cite web|first=John|last=Siracusa|date=September 5, 2002|url=https://arstechnica.com/reviews/os/macosx-10-2.ars|title=Mac OS X 10.2 Jaguar|website=[[Ars Technica]]|access-date=May 31, 2008}}</ref>
|-
! 6.8
| October 3, 2003
| Mac OS X v10.2.8
|-
! 7.0
| October 24, 2003
| rowspan="2" | [[Mac OS X Panther]]
| Mac OS X v10.3.0
* BSD layer synchronized with [[FreeBSD]] 5
* Automatic file [[defragmentation]], hot-file clustering and optional [[case sensitivity]] in HFS+
* [[Bash (Unix shell)|Bash]] instead of [[tcsh]] as default [[Unix shell|shell]]
* Read-only [[NTFS]] support (Darwin 7.9)<ref>{{cite web|last=Siracusa|first=John|date=November 9, 2003|url=https://arstechnica.com/reviews/os/macosx-10-3.ars|title=Mac OS X 10.3 Panther|website=[[Ars Technica]]|access-date=May 31, 2008}}</ref>
|-
! 7.9
| April 15, 2005
| Mac OS X v10.3.9
|-
! 8.0
| April 29, 2005
| rowspan="2" | {{ubl
                | [[Mac OS X Tiger]]
                | Mac OS X for [[Apple TV]]
                }}
| Mac OS X v10.4.0
* Download for Darwin 8.0.1 can be found [https://sourceforge.net/projects/darwinsource/files/Darwin/8.0.1/ here]
* Mac OS X for Apple TV in Darwin 8.8.2
* Stable kernel [[API|programming interface]], finer-grained kernel [[lock (computer science)|locking]], 64-bit BSD layer
* [[launchd]] [[operating system service management|service management]] framework
* [[Extended file attributes]], [[access control lists]]
* Commands such as [[cp (Unix)|cp]] and [[mv (Unix)|mv]] updated to preserve extended attributes and [[resource fork]]s<ref>{{cite web|last=Siracusa|first=John|date=April 28, 2005|url=https://arstechnica.com/reviews/os/macosx-10-4.ars|title=Mac OS X 10.4 Tiger|website=[[Ars Technica]]|access-date=May 30, 2008}}</ref>
|-
! 8.11
| November 14, 2007
| Mac OS X v10.4.11
|-
|}
The jump in version numbers from Darwin 1.4.1 to 5.1 with the release of Mac OS X v10.1.1 was designed to tie Darwin to the Mac OS X version and build numbering system, which in turn is inherited from NeXTSTEP. In the build numbering system of macOS, every version has a unique beginning build number, which identifies what whole version of macOS it is part of. Mac OS X v10.0 had build numbers starting with 4, 10.1 had build numbers starting with 5, and so forth (earlier build numbers represented developer releases).<ref>{{cite mailing list|last=Prabhakar|first=Ernie|date=November 9, 2001|url=http://lists.apple.com/archives/darwin-development/2001/Nov/msg00189.html|title=Darwin Version - New Scheme in Software Update 1|mailing-list=darwin-development|access-date=June 2, 2008|archive-url=https://web.archive.org/web/20090114195544/http://lists.apple.com/archives/darwin-development/2001/Nov/msg00189.html|archive-date=January 14, 2009|url-status=dead|df=mdy-all}}</ref>