Editing MacOS (section)

=== Mac OS X 10.5 Leopard ===
{{Main|Mac OS X Leopard}}

Mac OS X 10.5 Leopard was released on October 26, 2007. It was called by Apple "the largest update of Mac OS X". It brought more than 300 new features.<ref>{{Cite web |year=2008 |title=Apple&nbsp;– Mac OS X Leopard&nbsp;– Features&nbsp;– 300+ New Features |url=https://www.apple.com/macosx/features/300.html |archive-url=https://web.archive.org/web/20080501175556/https://www.apple.com/macosx/features/300.html |archive-date=May 1, 2008 |access-date=June 13, 2008 |publisher=[[Apple Inc.|Apple]]}}</ref> Leopard supports both [[PowerPC]]- and [[X86|Intel x86]]-based Macintosh computers; support for the G3 processor was dropped and the G4 processor required a minimum clock rate of 867&nbsp;MHz, and at least 512&nbsp;MB of [[Random-access memory|RAM]] to be installed. The single DVD works for all supported Macs (including 64-bit machines). New features include a new look, an updated Finder, [[Time Machine (macOS)|Time Machine]], [[Spaces (software)|Spaces]], [[Boot Camp (software)|Boot Camp]] pre-installed,<ref name="bootcamp">{{Cite web |year=2006 |title=Apple&nbsp;– BootCamp |url=https://www.apple.com/macosx/bootcamp |archive-url=https://web.archive.org/web/20060602044022/https://www.apple.com/macosx/bootcamp |archive-date=June 2, 2006 |access-date=June 5, 2006 |publisher=[[Apple Inc.|Apple]]}}</ref> full support for [[64-bit]] applications (including graphical applications), new features in [[Mail (OS X)|Mail]] and [[iChat]], and a number of new security features. Leopard is an [[Single UNIX Specification|Open Brand UNIX 03]] registered product on the Intel platform. It was also the first [[Berkeley Software Distribution|BSD-based]] OS to receive UNIX 03 certification.<ref>{{Cite web |title=Mac OS X Version 10.5 on Intel-based Macintosh computers |url=https://www.opengroup.org/openbrand/register/brand3555.htm |url-status=live |archive-url=https://web.archive.org/web/20080511222112/https://www.opengroup.org/openbrand/register/brand3555.htm |archive-date=May 11, 2008 |access-date=December 4, 2014 |publisher=The Open Group |df=mdy-all}}</ref><ref>{{Cite web |title=Mac OS X Leopard&nbsp;– Technology&nbsp;– UNIX |url=https://www.apple.com/server/macosx/technology/unix.html |url-status=live |archive-url=https://web.archive.org/web/20110609032125/https://www.apple.com/server/macosx/technology/unix.html |archive-date=June 9, 2011 |access-date=October 26, 2007 |website=Leopard Technology Overview |publisher=[[Apple Inc.|Apple]] |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. |df=mdy-all}}</ref> Leopard dropped support for the [[Classic Environment]] and all Classic applications.<ref>{{Cite web |date=January 13, 2006 |title=Do Classic applications work with Mac OS X 10.5 or Intel-based Macs? |url=https://docs.info.apple.com/article.html?artnum=303137 |url-status=dead |archive-url=https://web.archive.org/web/20071025084826/https://docs.info.apple.com/article.html?artnum=303137 |archive-date=October 25, 2007 |access-date=October 25, 2007 |website=Knowledge Base |publisher=[[Apple Inc.|Apple]] |df=mdy-all}}</ref> It was the final version of Mac OS X to support the PowerPC architecture.<ref>{{Cite book |last=Cheeseman |first=Bill |url=https://books.google.com/books?id=B2iloXnZZNAC&q=mac+os+x+leopard+10.5+last+version+to+support+power+pc&pg=PT34 |title=Cocoa Recipes for Mac OS X |date=2010-04-26 |publisher=Pearson Education |isbn=978-0-321-70288-3 |language=en |access-date=October 19, 2020 |archive-date=January 11, 2023 |archive-url=https://web.archive.org/web/20230111042259/https://books.google.com/books?id=B2iloXnZZNAC&q=mac+os+x+leopard+10.5+last+version+to+support+power+pc&pg=PT34 |url-status=live }}</ref>