Free and open-source cross-platform widget toolkit for creating graphical user interfaces
For other uses, see GTK (disambiguation).
GTK version 4 (gtk4-widget-factory, a collection of examples that demonstrate many of the GUI widgets)
Original author(s)
Spencer Kimball, Peter Mattis
Developer(s)
The GNOME Project, eXperimental Computing Facility (XCF)
Initial release
April 14, 1998; 26 years ago (1998-04-14)
Stable release
4.14.1
/ March 16, 2024; 43 days ago (2024-03-16)
Preview release
4.13.9
/ March 2, 2024; 57 days ago (2024-03-02)
Repository
gitlab.gnome.org/GNOME/gtk
Written in
C, CSS[1]
Operating system
Linux, Unix-like, macOS, Windows
Type
Widget toolkit
License
LGPLv2.1+
Website
gtk.org
GTK (formerly GIMP ToolKit[2] and GTK+[3]) is a free software cross-platform widget toolkit for creating graphical user interfaces (GUIs).[4] It is licensed under the terms of the GNU Lesser General Public License, allowing both free and proprietary software to use it. It is one of the most popular toolkits for the Wayland and X11 windowing systems.[5]
The GTK team releases new versions on a regular basis.[6] GTK 4 and GTK 3 are maintained, while GTK 2 is end-of-life.[7] GTK1 is independently maintained by the CinePaint project.[8]
^"The GTK Open Source Project on Open Hub: Languages Page". www.openhub.net. Archived from the original on 28 March 2019. Retrieved 28 March 2019.
^"A brief description on how GTK was born". www.gtk.org. Archived from the original on 9 June 2023. Retrieved 5 July 2023.
^Bassi, Emmanuele (6 February 2019). "Project rename to "GTK"". mail.gnome.org. GNOME mailinglist. Archived from the original on 7 November 2020. Retrieved 7 February 2019.
^The GTK+ Team. "GTK+ Features". Archived from the original on 25 May 2019. Retrieved 8 September 2014.
^"Documentation". www.x.org. Archived from the original on 21 December 2019. Retrieved 22 November 2019.
^Cite error: The named reference roadmap was invoked but never defined (see the help page).
^"GTK 4.0 – GTK Development Blog". 16 December 2020. Archived from the original on 28 May 2023. Retrieved 18 October 2021.
^"Robin Rowe / GTK1 · GitLab". GitLab. Archived from the original on 9 March 2023. Retrieved 22 February 2023.
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