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    Home / Definitions / GTK+
    GTK+ is a multi-platform toolkit for creating graphical user interfaces (GUIs). GTK+ is suitable for projects ranging from small one-off projects to complete application suites. GTK+ is free software and part of the GNU Project. However, the licensing terms for GTK+, the GNU LGPL, allow it to be used by all developers, including those developing proprietary software, without any license fees or royalties. [Source GTK+ Web site]