Phoronix: GTK+ 3.0 On Mac OS X Is Moving Along

While the GTK+ tool-kit is primarily used on Linux based systems and those running an X.Org Server, with GTK+ 3.0 there are several improvements to benefit the Wayland Display Server as well as other operating systems...

http://www.phoronix.com/vr.php?view=ODk2Mg