Windowing System

Windowing system
Display server

• X Window System (X11)
• Mac OS X Quartz
• Microsoft Windows Graphics Device Interface (GDI)
• Wayland
• DirectFB

X Window System

X Window System

• XFree86
• X.Org Server
• Cygwin/X
• Xming X Server
• OpenText Exceed Classic (ex. Hummingbird)
• OpenText Exceed

Remote Desktop

• Virtual Network Computing (VNC)
• Remote Frame Buffer protocol (RFB)
• Remote Desktop Protocol (RDP)
• Remote Desktop Services (RDS)
• Citrix XenApp and XenDesktop
• Tarantella

Desktop Environment

Desktop Environments
Comparison of X Window System desktop environments
What kinds of desktop environments and shells are available?

• Common Desktop Environment (CDE)
• KDE
• GNOME
• GNOME Shell
• Cinnamon
• Unity
• MATE
• Xfce
• LXDE
• Enlightenment

Window Manager

Window Manager
Comparison of X Window Managers

How to determine which window manager is running

$ sudo apt-get install wmctrl
$ man wmctrl
-m  Display information about the window manager ...
$ wmctrl -m
Name: Metacity
$ echo $DESKTOP_SESSION
ubuntu-2d
$ echo $XDG_CURRENT_DESKTOP
Unity

Compositing

Compositing Window Manager

• KWin => KDE
• Mutter => GNOME 3
• Metacity => GNOME 2
• Marco => MATE
• Compiz => Unity
• Xfwm => Xfce

Widget Toolkits

List of widget toolkits

• Motif
• Qt
• GTK+