cygwin - A linux compiler for windows

For installation guide follow the link: Installation guide

Features

• Cost - Cygwin/X is free for use.
• Modifiability - Cygwin/X source code is freely available for modification.
• Color Depths - Supports all color depths supported by Windows.
• Multi-Window Mode - Multi-Window mode allows each X Client to be opened in, and managed by, its own Windows window. This makes each X Client show up independently in the task bar. Additionally, the icon hint provided by the X Client is used for the Windows window icon.
• Rootless Mode - Rootless mode makes the root window for the X Server be transparent, making all of the X Clients float over the other Windows windows. Rootless mode requires an external window manager, such as twm, openbox, fvwm2, WindowMaker, etc.
• Fullscreen Mode - Fullscreen mode allows the entire display to be taken over by Cygwin/X, which works particularly well when logging into a remote XDM server.
• No Decoration Mode - No Decoration mode creates a full-sized root window (not to be used with Fullscreen, Multi-Window, or Rootless modes) without any Windows window decorations (title bar, border, etc.).
• Clipboard Integration - Clipboard integration between the X clipboard and the Windows clipboard. Supports text only. Works with Unicode and MBCS strings for non-U.S. locales.
• Remote Logins - Remote logins to XDM (X Display Manager) services are supported, allowing the entire session to be managed by a remote machine. Coupled with Full Screen mode, Cygwin/X can be used as an alternative to a KVM switch for *nix machines on your local network.