+**Gtk** is a free and open-source [Widget Toolkit](/wiki/Widget_Toolkit) for creating graphical user interfaces (GUIs). It is a popular choice for desktop applications, most notably forming the foundation of the [GNOME](/wiki/GNOME) desktop environment. Gtk allows developers to build intuitive and visually appealing interfaces across various operating systems.
+## See also
+- [GUI](/wiki/GUI)
+- [GNOME](/wiki/GNOME)
+- [GTK+](/wiki/GTK+)
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