Cygwin/X is a port of the X Window System to Cygwin. The Cygwin library provides a UNIX-like API on the Win32 platform.
Use Cygwin's setup program to install the xinit package. (See the instructions in the Section called Installing Cygwin/X in Chapter 2 for more details).
Start the X server using the "XWin Server" shortcut under "Cygwin-X" on the Start Menu. (See the Section called Starting in multiwindow mode (startxwin) in Chapter 3 for more details).
Start X clients using the "X applications menu" icon in the notification area, or from the command line. (See the Section called Displaying local clients in Chapter 3 for more details).
See the rest of this User's Guide for other topics such as desktop environments, remote clients, XDMCP, etc.