X11

X11 is a means of sharing data over a computer network. It is not an actual program or software, but a type of communication protocol that works across multiple operating systems. Think of it like a language that computers use to communicate information. With X11, computers can send text, images, and other data to each other. For example, if you have two computers, you can use X11 to send a file, like a photo, from one computer to the other.