GTK vs Qt - WikiVS

GTK+ is used as the standard toolkit for the GNOME and Xfce Desktop Environments while Qt is used for KDE. //<br />
Qt is developed by Qt Software, a division of Nokia. Qt Software was originally named Trolltech before being acquired by Nokia in 2008.<br />
GTK+ was originally created to develop GIMP and is now developed and maintained by the GNOME Foundation.