Kubuntu is community made Free and Open Source Software. You can do almost anything you want with it.
Copyright
The website is Copyright members of the Kubuntu community and may be freely copied and modified.
Icons are from Breeze Theme which is Copyright 2014 Uri Herrera and others, Oxygen Theme which is Copyright Nuno Pinheiro and others and may be copied under the GNU LGPL version 3 or later.
Kubuntu Software
The Kubuntu operating system may be copied under a range of free software licences significantly the GNU GPL version 2 or later.
Trademarks
Kubuntu is a registered trademarks of Canonical Ltd. Please see the Ubuntu Trademark Policy for more information.