In 2016, with the release of macOS 10.12 Sierra, the name was changed from OS X to macOS to streamline it with the branding of Apple's other primary operating systems: iOS, watchOS, and tvOS. macOS 10.12 Sierra's main features are the introduction of Siri to macOS, Optimized Storage, improvements to included applications, and greater integration with Apple's iPhone and Apple Watch. The Apple File System (APFS) was announced at the Apple Worldwide Developers Conference in 2016 as a replacement for HFS+, a highly criticized file system.
Apple previewed macOS 10.13 High Sierra at the 2017 Worldwide Developers Conference, before releasing it later that year. When running on solid state drives, it uses APFS, rather than HFS+. Its successor, macOS 10.14 Mojave, was released in 2018, adding a dark user interface option and a dynamic wallpaper setting. It was succeeded by macOS 10.15 Catalina in 2019, which replaces iTunes with separate apps for different types of media, and introduces the Catalyst system for porting iOS apps.
macOS 10.15 Catalina was released on October 7, 2019. Updates included enchanced voice control, and bundled apps for music, video, and podcasts that together replace the functions of iTunes, with support for 32-bit applications being officially dropped.
macOS 10.12 Sierra was released to the public on September 20, 2016. New features include the addition of Siri, Optimized Storage, and updates to Photos, Messages, and iTunes.
macOS 10.14 Mojave was released on September 24, 2018. The update introduced a system-wide dark mode and several new apps lifted from iOS, such as Apple News.
macOS 10.13 High Sierra was released to the public on September 25, 2017. Like OS X El Capitan and OS X Mountain Lion, High Sierra is a refinement-based update having very few new features visible to a user, including updates to Safari, Photos, and Mail, among other changes.
macOS frameworks are also stored as bundles; the top-level directory of a framework bundle has a name that is the name of the framework followed by the extension. In the top-level directory is a directory, with subdirectories for one or more versions of the framework, each subdirectory containing the dynamic library code for the framework, in a file whose name is the same as the name of the framework, possibly with a folder containing header files for the framework, and other subfolders such as. The directory also contains a symbolic link to the directory for the current version of the framework. In the top-level directory are symbolic links to the contents of.
With this version Apple stopped bundling open source services such as Calendar Server, Contacts Server, the Mail Server, DNS, DHCP, VPN Server, and Websites with macOS Server. Included services are now limited to Profile Manager, Open Directory and Xsan.
Version 5.9 of macOS Server only operates on macOS Catalina (10.15) and later.
Version 5.3 of macOS Server only operates on macOS Sierra (10.12.4) and later.
Version 5.2 of macOS Server operates with either OS X El Capitan 10.11 or macOS Sierra 10.12.
Version 5.5 of macOS Server only operates on macOS High Sierra (10.13.3) and later.
Version 5.4 of macOS Server only operates on macOS High Sierra (10.13) and later.
Version 5.8 of macOS Server only operates on macOS Mojave (10.14.4) and later. Profile Manager supports new restrictions, payloads, and commands.
Version 5.7 of macOS Server only operates on macOS Mojave (10.14) and later.
Version 5.6 of macOS Server only operates on macOS High Sierra (10.13.5) and later.
Four new apps (News, Stocks, Voice Memos and Home) are ported to macOS Mojave from iOS, with Apple implementing a subset of UIKit on the desktop OS. Third-party developers would be able to port iOS applications to macOS in 2019.
Apple produces macOS applications, some of which are included and some sold separately. This includes iWork, Final Cut Pro, Logic Pro, iLife, and the database application FileMaker. Numerous other developers also offer software for macOS.
In 2018 Apple introduced an application layer, reportedly codenamed Marzipan, to port iOS apps to macOS. macOS Mojave included ports of four first-party iOS apps including Home and News, and it was announced that the API would be available for third-party developers to use from 2019.
Under MacOS, screensavers are regular MacOS application bundles with the file extension.