Xquartz is an X server that interacts with the MacOS X native Aqua window system, displaying windows on the Mac desktop and accepting input from the Mac system devices, allowing X11 applications to be used in a native Mac desktop session.It formally replaced Apple's internal X11 app. XQuartz is an open-source version of the X.Org X server, a component of the X Window System (X11, or shortened to simply X, and sometimes informally X-Windows) that runs on macOS.Together with supporting libraries and applications, it forms the X11.app. The XQuartz project is an open-source effort to develop a version of the X.Org X Window System that runs on OS X.
