Developer
The /Library/Developer folder stores Apple developer tools and shared build resources used by Xcode and Command Line Tools on macOS.
What is Developer?
The /Library/Developer folder is a system-wide developer data location used by Apple development tools on macOS. It commonly contains the Command Line Tools package at /Library/Developer/CommandLineTools, which provides compilers, SDK headers, and command-line utilities used for software development in Terminal and build workflows. Developers may encounter this folder when installing Xcode components, setting up programming tools, or troubleshooting commands such as xcode-select and xcrun. Other software development tools can depend on these files even if you do not open Xcode itself. Because this location supports shared build tools rather than ordinary app documents, removing it can break compilers, package managers, and scripts until the tools are reinstalled.
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Safety overview
Status: Use with caution
This folder is associated with Apple developer tooling, especially Xcode Command Line Tools. Its contents can be used by Terminal-based development tools, build scripts, Homebrew workflows, and other software that expects Apple compilers or SDK files to be present. Deleting /Library/Developer can cause command-line build tools to stop working and may trigger errors about an invalid developer path. If you want to remove it, first confirm that you no longer need Xcode Command Line Tools or any developer workflow that depends on them.
Recommendation: Keep this folder if you use Xcode, Homebrew-based development tools, programming languages that compile native extensions, or any build workflow on your Mac. If you do not do development work and nothing on your Mac depends on Apple command-line build tools, you can remove the developer tools and reinstall them later if needed. Expect developer commands and some install scripts to stop working until the tools are added back.
File path
/Library/Developer
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