Kubuntu is a user friendly operating system based on KDE, the K Desktop Environment. With a predictable 6 month release cycle and part of the Ubuntu project, Kubuntu is the GNU/Linux distribution for everyone.
Mandriva began life as Linux Mandrake in July 1998 in France in Gael Duval's bedroom after he ported a KDE 1.0 desktop onto Red Hat Linux 5.1, uploaded the result onto two FTP servers, went away on holiday, and came back to find that he had a popular and successful Linux distribution on his hands
R. Agrawal, T. Imielinski, и A. Swami. SIGMOD '93: Proceedings of the 1993 ACM SIGMOD international conference on Management of data, стр. 207--216. New York, NY, USA, ACM Press, (1993)
S. Amizadeh, H. Palangi, A. Polozov, Y. Huang, и K. Koishida. Proceedings of the 37th International Conference on Machine Learning, том 119 из Proceedings of Machine Learning Research, стр. 279--290. PMLR, (13--18 Jul 2020)