The official derivative of the Ubuntu is Kubuntu. Instead of GNOME, Kubuntu uses KDE graphical environment, and shares its underlying system along with Ubuntu; Kubuntu is a project of Ubuntu.

Origin of Kubuntu

There is a possibility of running Kubuntu on both of the desktops GNOME and KDE. Each and every package of Kubuntu is common as that of Ubuntu.

The word Kubuntu has literal meaning - ‘towards humanity’. Here the letter K is referred to the desktop or applications of KDE running by Kubuntu. In Kirundi, the meaning of Kubuntu is also given as ‘free’.

Overview of Ubuntu