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macOS Big Sur (version 11) is the seventeenth major release of macOS, Apple's operating system for Macintosh computers. It was announced at Apple's Worldwide Developers Conference (WWDC) on June 22, 2020, [4] and was released to the public on November 12, 2020.
The history of macOS, Apple's current Mac operating system formerly named Mac OS X until 2011 and then OS X until 2016, began with the company's project to replace its "classic" Mac OS. That system, up to and including its final release Mac OS 9 , was a direct descendant of the operating system Apple had used in its Mac computers since their ...
Beginning with Mac OS X 10.7 Lion, Preview restricts the Format option popup menu in the Save As dialog to commonly used types. It is possible to access the full format list by holding down the Option key when clicking the Format popup menu. [7] (GIF, ICNS, JPEG, JPEG-2000, Microsoft BMP, Microsoft Icon, OpenEXR, PDF, Photoshop, PNG, SGI, TGA ...
Previous Macintosh operating systems (versions of the classic Mac OS) were named using Arabic numerals, as with Mac OS 8 and Mac OS 9. [22] [20] Until macOS 11 Big Sur, all versions of the operating system were given version numbers of the form 10.x, with this going from 10.0 up until 10.15; starting with macOS 11 Big Sur, Apple switched to ...
Calendar, previously known as iCal before OS X Mountain Lion, is a personal calendar app made by Apple Inc., originally released as a free download for Mac OS X v10.2 on September 10, 2002, before being bundled with the operating system as iCal 1.5 with the release of Mac OS X v10.3. It tracks events and appointments added by the user and ...
Mac OS X Server 10.2 – code name Jaguar; Mac OS X Server 10.3 – code name Panther; Mac OS X Server 10.4 – code name Tiger; Mac OS X Server 10.5 – also marketed as Leopard Server; Mac OS X Server 10.6 – also marketed as Snow Leopard Server; Starting with Lion, there is no separate Mac OS X Server operating system.
The removal of a previously bundled Python 2.7 interpreter (from 12.3) [14] [15] The removal of the ability to use custom Quartz Composer filters and plugins in Photo Booth. networkQuality, a command-line tool for measuring upload/download capacity, upload/download flows, and upload/download responsiveness
XNU ("X is Not Unix") is the computer operating system (OS) kernel developed at Apple Inc. since December 1996 for use in the Mac OS X (now macOS) operating system and released as free and open-source software as part of the Darwin OS, which, in addition to being the basis for macOS, is also the basis for Apple TV Software, iOS, iPadOS, watchOS, visionOS, and tvOS.