Qt is also used in the popular KDE desktop environment. Xfce is based on GTK, which is used for GNOME. These desktops could be considered mini versions of both GNOME and KDE, and these desktops ...

Gtk 4 is the version used in GNOME 40 onward, and aims to replace all other GNOME themes, to widespread unhappiness and discontent. At the end of the 1990s, Xfce was rewritten from XForms to Gtk 2 ...