X11

X11: Windowing System & Graphical UI for UNIX-like OS

X11 is a windowing system and graphical user interface commonly used on UNIX-like operating systems. It allows applications to display windows and graphics on the screen.

What is X11?

X11, also known as X Window System, is a popular graphical user interface and network-transparent windowing system used on many Unix and Unix-like operating systems. It provides the standard toolkit and protocols to build GUI applications that can display windows on the screen and interact with a mouse, keyboard, and other input devices.

Some key features of X11 include:

• Hardware independence - X11 abstracts away low level details of graphics hardware allowing for software to be portable across different platforms
• Network transparency - An X11 app can display on one machine while actually running on another on the network
• Client-server model - The X server manages, displays and handles input while X client apps connect to it
• Extensibility - X11 can be extended via extensions like rendering OpenGL content in app windows
• Common on Linux/Unix - X11 has been the standard GUI for Unix operating systems for decades and continues to be in wide usage, particularly with Linux desktops.

While newer display servers like Wayland have emerged recently, X11 continues to be supported across all Linux distributions and remains essential knowledge for Unix/Linux application development.

X11 Features

Official Links