X Window System

The X Window System, also known as X11, is a windowing system for Unix-like operating systems.
It was first supported under A/UX, Mac OS 8 and 9 through MacX.
X11 was ported to Mac OS X in the form of X11.app, which has since been superseded by XQuartz.
==Video gallery==
What is Mac X11|XQuartz on 10.8 Mountain Lion
How to install XQuartz (X11) on the MAC
How To Install Run XQuartz X11 Applications On Mac OS X 10 10 Yosemite Or Later
==External links==
*XQuartz.org
*X11 for Mac OS X at Apple (archived 2004-10-10)
*X Window System and XQuartz at Wikipedia
Category:Mac OS X
Category:Unix