If you've never heard of the X Window System then the first thing to realize
is that it has absolutely nothing to do with Microsoft Windows. Rather, The X
Window System (more commonly known as X or X11) is a computer software system
and network protocol that provides a graphical user interface (GUI) for
networked computers. In a nutshell, it enables you to build GUI environments
such as by drawing and moving windows on the screen and interacting with a
mouse and keyboard. Since it's an open source project, there are many
implementations of The X Window System and Apple X11 is the most popular
implementation of the X Window System that makes it possible to run X11-based
applications in Mac OS X. It's based on the open source XFree86 project which
is the most common implementation of X11. Apple X11 includes an X11 window
server, Quartz window manager, libraries, and basic utilities such as xterm.
*You'll need to be well versed in network computing and programming to work
out how to use Apple X11 but you can be at least assured that this is the
most important implementation of The X Windows System on the Mac.*Download
*Apple X11 2.6.5* in Softonic
