an Entity references as follows:
This is a list of applications that use GTK+ and/or Clutter for their GUI widgets. Such applications blend well with desktop environments that are GTK+-based as well, such as GNOME, Cinnamon, LXDE, MATE, Pantheon, Sugar, Xfce or ROX Desktop.In contrast to Qt, GTK+ relies on additional libraries, such as GLib, Cairo, Pango, or GStreamer. There are no unnecessary abstraction layers and occurring problems are solved at the root, not somewhere above the abstraction layer.