XwindowSystem
Last edit August 24, 2014
The networkable, standards-based graphical system used on Unix-based workstations. It is comprised of several interchangeable components:
XwindowProtocol
XwindowServer
WindowManager
client libraries (Xlib, XCB) and toolkits (GNOME, KDE) used by applications
References:
http://x.org/X11_clientdesign.html
CategoryXwindow