Ubuntu (IPA pronunciation /ùbúntú/) is a predominantly desktop-oriented Linux distribution, based on Debian GNU/Linux but with a stronger focus on usability, regular releases, and ease of installation. Ubuntu is sponsored by Canonical Ltd, owned by South African Mark Shuttleworth; the name of the distribution comes from the African concept of ubuntu which may be rendered roughly as "humanity toward others", though other meanings have been suggested.[4] The most recent version, Ubuntu 8.04 (Hardy Heron), was released on April 24, 2008. Ubuntu aims to use only free software to provide an up-to-date yet stable operating system for the average user. Kubuntu and Xubuntu are official subprojects of the Ubuntu project, aiming to bring the KDE and Xfce desktop environments to the Ubuntu core, respectively. Edubuntu is an official subproject "designed for school environments, and should be equally suitable for kids to use at home."[6]