The X Window System, aka X11 or simply X, provides a mechanism that allows you to have the graphical user interface (GUI) for an application running on a remote system to be displayed on the system on which you are running X server software. For systems running a Microsoft Windows operating system, you can use the free PuTTY program to establish a Secure Shell (SSH) connection to an SSH server and configure PuTTY to allow X forwarding so that you can run programs on the SSH server, but have their GUI displayed on the Microsoft Windows system on which you are running PuTTY.
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