System Shared Components

Sbin /usr/sbin is a protected macOS system folder that stores many administrator and network command-line tools used by the operating system. /usr/sbin

Library /System/Library contains core macOS components used by the operating system, built-in apps, frameworks, drivers, fonts, and essential services. /System/Library

System /System/iOSSupport/System is a macOS system folder used for iPhone and iPad compatibility features and should generally be left alone. /System/iOSSupport/System

Driver Kit /System/DriverKit is a macOS system folder that supports DriverKit hardware drivers used by some devices and low-level extensions. /System/DriverKit

Extensions /System/Library/Extensions contains macOS kernel extensions and driver components that support hardware and low-level system features. /System/Library/Extensions

Metadata ~/Library/Metadata stores Spotlight indexing metadata used by macOS to organize and speed up search in some library data. ~/Library/Metadata

Keychains /Library/Keychains stores system-wide keychains and trust data used by macOS and apps for certificates, secure identities, and shared credentials. /Library/Keychains

Extensions /Library/Extensions stores kernel extensions used by macOS or installed hardware and security software to add low-level system features. /Library/Extensions

Printers The /Library/Printers folder stores printer drivers, PPDs, and related printing resources used by macOS and installed printer software. /Library/Printers

Launch Daemons /Library/LaunchDaemons stores system-wide background service definitions that let macOS and installed software start tasks automatically. /Library/LaunchDaemons

Library Privileg /Library/PrivilegedHelperTools stores helper binaries installed by apps that need elevated privileges for background or system-level tasks. /Library/PrivilegedHelperTools

Fonts The /Library/Fonts folder stores fonts available to all users on the Mac for apps like design, office, and document tools. /Library/Fonts

Frameworks /Library/Frameworks stores shared frameworks installed for macOS apps, especially older, cross-platform, or developer-related software. /Library/Frameworks

Audio /Library/Audio is a shared macOS system location for audio components, drivers, plug-ins, and MIDI resources used by the OS and audio software. /Library/Audio

System The /System folder contains core macOS files and frameworks required for startup, built-in apps, and normal system operation. /System

Applications The /Applications folder is the main place where macOS stores installed apps that are available to all users on the Mac. /Applications

Usr /usr is a core macOS Unix directory containing commands, libraries, and shared resources used by the system and many apps. /usr

Dev /dev is a core Unix device directory on macOS that provides special files used by the operating system and hardware-aware software. /dev

Library The /Library folder stores shared macOS and app resources used by all users, including system support files, settings, extensions, and services. /Library

Sbin /sbin is a core macOS system folder containing low-level administration tools used during startup, repair, networking, and maintenance tasks. /sbin

Bin /bin is a core Unix system directory on macOS that holds essential command-line tools used by the operating system and Terminal sessions. /bin

Private The /private folder is a protected macOS system directory used to hold core Unix-style folders such as tmp, var, and etc. /private