Editing Cygwin/X (section)

{{Short description|Windows implementation of X11}}
{{More citations needed|date=May 2024}}
{{Infobox software
| name                   = Cygwin/X
| logo                   = <!-- Image name is enough -->
| logo alt               = 
| screenshot             = <!-- Image name is enough -->
| caption                = The screen shows X applications ([[xeyes]], [[xclock]], [[xterm]]) sharing the screen with native Windows applications (Date and Time, Calculator).
| screenshot alt         = 
| collapsible            = 
| author                 = 
| developer              = [[Cygnus Solutions]], [[Red Hat]], [[Cygwin]] project volunteers
| released               = {{Start date and age|1999|05|26}}<ref>{{cite web | url=https://cygwin.com/pipermail/cygwin-xfree/1999-May/000003.html | title=Xfree | date=26 May 1999 }}</ref>
| discontinued           = 
| latest release version = 21.1.4-2
| latest release date    = {{Start date and age|2022|09|21}}<ref>{{cite web | url=https://cygwin.com/pipermail/cygwin-announce/2022-September/010721.html | title=xorg-server-21.1.4-2 | date=21 September 2022 }}</ref>
| status                 = 
| programming language   = [[C (programming language)|C]]/[[C++]]
| operating system       = [[Microsoft Windows]]
| platform               = [[Cygwin]]
| size                   = 
| language               = 
| language count         = <!-- Number only -->
| language footnote      = 
| genre                  = 
| license                = [[X11 license]]
| alexa                  = 
| website                = {{URL|x.cygwin.com}}
| standard               = 
| AsOf                   = 
}}
'''Cygwin/X''' is an implementation of the [[X Window System]] that runs under [[Microsoft Windows]]. It is part of the [[Cygwin]] project, and is installed using Cygwin's standard setup system.  Cygwin/X is [[free software]], licensed under the [[X11 License]].

Cygwin/X was originally based on [[XFree86]], but switched to the [[X.Org Server]] due to [[XFree86#2004: Licensing controversy|XFree86 licensing controversy]], owing to concerns over XFree86's new [[software license]] not being compatible with the [[GNU General Public License|GPL]].

After a long hiatus following an 8 July 2005 release, the project was revitalised and the developers released a version based on the X.org modular 7.4 release on 12 November 2008 and continue to maintain it.