What is XQuartz?
Mac OS X uses what is called X11 to run software through the X Window System. It has been around since OS X Leopard. It has a long history of open source support and has been running under the project header, XQuartz. Apple pretty much based their X11 app on this project. When Mountain Lion (OS X 10.8) came along, Apple no longer shipped X11 along with it. They decided to direct everyone to the XQuartz project to install it. One reason is that the open source community updates the software much faster than Apple was doing. So, basically the XQuartz project handles development on the Mac side, and since it was updating faster than the versions Apple was shipping, Apple decided to just leave it the hands of the open source community. Which, I would like to mention, Apple does support the XQuartz project.
It can be installed on previous versions of OS X as well, even though they still have X11 by default. But, if you are running Mountain Lion and need this system, then you will need to download and install it.
Start by going the XQuartz website to download the latest version.
Next, go to your Downloads folder and double-click on the .dmg file and when it’s mounted, click on the .pkg file.
Navigate your way through the installation process. It’s pretty straightforward.
Before the installer finishes, it will notify you that you will need to log out and log back in after installation.
Once you get the “Successful” screen, close it out and reboot your computer.
That’s it! XQuartz is now installed. You will see it in the Applications folder. Most apps will call it automatically if needed. If you are using it in conjunction with your Wine install there are some options where you can use it as a manager so to speak. But basically you’re ready to rock!