Kubuntu vs openSUSE: What are the differences?
Kubuntu: An open-source operating system. It is a free, complete, and open-source alternative to Microsoft Windows and Mac OS X which contains everything you need to work, play, or share. It unites Ubuntu with KDE and the fabulous Plasma desktop, bringing you a full set of applications. The installation includes productivity, office, email, graphics, photography, and music applications ready to use at startup; openSUSE: The makers' choice for sysadmins, developers and desktop users. The openSUSE project is a worldwide effort that promotes the use of Linux everywhere. openSUSE creates one of the world's best Linux distributions, working together in an open, transparent and friendly manner as part of the worldwide Free and Open Source Software community.
Kubuntu and openSUSE can be primarily classified as "Operating Systems" tools.