until the next system startup. Beginning with OS X 10.8, Software Update became part of the App Store application. Beginning with macOS Mojave (10.14), it became a part of System preferences. X11 In Mac OS X Tiger, X11 was an optional install included on the install DVD. Mac OS X Leopard, Snow Leopard and Lion installed X11 by default, but from OS X Mountain Lion (10.8), Apple dropped dedicated support for X11, with users directed to the open source XQuartz project (to which it contributes) instead. Development tools Server technology Core components AppleScript Aqua Audio Units Bonjour Boot Camp Carbon Cocoa Core Animation Core Audio Core Data Core Image Core Video Darwin Mission Control Keychain OpenGL plist Quartz QuickTime Rosetta Smart folder Spaces WebKit XNU Notes References components macOS components