Editing MacOS (section)

=== Mac OS X 10.6 Snow Leopard ===
{{Main|Mac OS X Snow Leopard}}

Mac OS X 10.6 Snow Leopard was released on August 28, 2009. Rather than delivering big changes to the appearance and end user functionality like the previous releases of {{nowrap|Mac OS X}}, Snow Leopard focused on "under the hood" changes, increasing the performance, efficiency, and stability of the operating system. For most users, the most noticeable changes were: the disk space that the operating system frees up after a clean install compared to Mac OS X 10.5 Leopard, a more responsive [[Finder (software)|Finder]] rewritten in [[Cocoa (API)|Cocoa]], faster [[Time Machine (macOS)|Time Machine]] backups, more reliable and user-friendly disk ejects, a more powerful version of the Preview application, as well as a faster [[Safari (web browser)|Safari]] web browser. Snow Leopard only supported machines with Intel CPUs, required at least 1&nbsp;GB of [[Random-access memory|RAM]], and dropped default support for applications built for the [[PowerPC]] architecture ([[Rosetta (software)|Rosetta]] could be installed as an additional component to retain support for PowerPC-only applications).<ref>{{Cite web |last=Lynch |first=Steven |date=June 12, 2008 |title=Mac OS X Snow Leopard Drops PowerPC Support |url=https://www.hardocp.com/news/2008/06/11/snow_leopard_will_support_powerpcs |url-status=live |archive-url=https://web.archive.org/web/20110927054316/https://www.hardocp.com/news/2008/06/11/snow_leopard_will_support_powerpcs |archive-date=September 27, 2011 |access-date=October 20, 2010 |publisher=HardOCP |df=mdy-all}}</ref>

Snow Leopard also featured new [[64-bit computing|64-bit]] technology capable of supporting greater amounts of [[Random-access memory|RAM]], improved support for multi-core processors through [[Grand Central Dispatch]], and advanced GPU performance with [[OpenCL]].<ref>{{Cite news |date=2009-08-19 |title=The 64-Bitness of Mac OS X 10.6 Snow Leopard |language=en-US |work=Low End Mac |url=https://lowendmac.com/2009/the-64-bitness-of-mac-os-x-10-6-snow-leopard |url-status=live |access-date=2016-12-31 |archive-url=https://web.archive.org/web/20161227090313/https://lowendmac.com/2009/the-64-bitness-of-mac-os-x-10-6-snow-leopard |archive-date=December 27, 2016 |df=mdy-all}}</ref>

The 10.6.6 update introduced support for the [[Mac App Store]], Apple's digital distribution platform for macOS applications.<ref>{{Cite web |last=Reisinger |first=Don |date=January 6, 2011 |title=Mac App Store launches on Snow Leopard |url=https://news.cnet.com/8301-13506_3-20027548-17.html |url-status=live |archive-url=https://web.archive.org/web/20120810234859/https://news.cnet.com/8301-13506_3-20027548-17.html |archive-date=August 10, 2012 |website=CNET |publisher=[[CBS Interactive]] |df=mdy-all}}</ref>

[[File:WWDC 2011 Moscone West Interior.jpg|thumb|250px|OS X Lion was announced at [[WWDC]] 2011 at [[Moscone West]]. ]]