This is an incomplete list of the various technologies (and core applications) in macOS. Go to : List of macOS components for more info. A * Apple Filing Protocol (AFP) * Apple File System * Aqua * AppleScript * Application Kit B * BOMArchiveHelper * Bonjour (formerly Rendezvous) * Bundle C * Carbon * Classic * Cocoa * Conflict Resolver * Core Animation * Core Audio * Core Data * Core Foundation * Core Image * Core Storage * Core Video * CoreServices * Crash Reporter * CUPS D * Darwin F * FileVault * Finder * Fink * FireWire * Foundation Kit H * I * iChat * iCloud * Image Capture * Image Kit * Inkwell * Installer * Interface Builder J * Jar Launcher * Java * JavaScriptCore K * Keychain * KWQ * Kotoeri L * Launchd * Label M * Mach * MobileMe (formerly .Mac) * macOS * macOS Server * MacPorts * MacRuby * Menu extra N * NetInfo * New World ROM O * Open Directory * Open CL * Open GL * Open Firmware * OpenStep P * plist * Portable Distributed Objects Q * Quartz * Quartz 2D * Quartz Compositor * QuickTime * QuickTime VR R * Repair permissions * Rosetta S * Smart folder * Spinning pinwheel * System Preferences * SystemStarter U * Uniform Type Identifiers * Universal Binaries W * WebCore * WebKit X * Xgrid * XNU * Xcode