GTK Widget Toolkit
An open-source, cross-platform UI widget toolkit for the Gnome Project. Originally developed as part of GIMP: The GNU Image Manipulation Program.
(www.gtk.org) The GTK Project - A free and open-source cross-platform widget toolkit website
ROAM_REFS: https://www.gtk.org/
- Create apps that users just love
Offering a complete set of UI elements, GTK is suitable for projects ranging from small one-off tools to complete application suites.
** Work with the language of your choice
Develop your GTK app with your language of choice by using Language Bindings or wrappers and take full advantage of the official GNOME bindings which guarantee API stability and time-based releases.