GTK
| GTK | |
|---|---|
GTK version 4 (gtk4-widget-factory, a collection of examples that demonstrate many of the GUI widgets) | |
| Original authors | Spencer Kimball, Peter Mattis |
| Developers | The GNOME Project, eXperimental Computing Facility (XCF) |
| Initial release | April 14, 1998 |
| Stable release | 4.22.1
/ 13 March 2026 |
| Preview release | 4.19.2
/ June 27, 2025 |
| Written in | C, CSS |
| Operating system | Linux and Unix-like; partial support for macOS and Windows |
| Type | Widget toolkit |
| License | LGPLv2.1+ |
| Website | gtk |
| Repository | |
GTK (formerly GIMP ToolKit and GTK+) is a free open-source widget toolkit for creating graphical user interfaces (GUIs) targeted at Linux and specifically GNOME (though with some use in other desktop environments). It is licensed under the terms of the GNU LGPL, allowing both free and proprietary software to use it.
The GTK team releases new versions on a regular basis. GTK 4 and GTK 3 are actively maintained, while GTK 2 is no longer supported. GTK 1 is independently maintained by the CinePaint project.