Kubuntu on the desktop
Kubuntu - the GNU/Linux distribution for everyone
(koo-BOON-too) - /kùbúntú/ - towards humanity.
Kubuntu is a free, user-friendly operating system based on the K Desktop Environment and on the award winning Ubuntu operating system. With a biannual release cycle and at least 18 months of free security updates for each release, it is the secure, stable computing environment you've been waiting for. Its community-driven development and pervasive availability are grounded in the concept of "humanity to others."
Kubuntu offers you all the major applications you need to play and/or work, and extra applications are just a few clicks away. The base system and all included software is free, and support is available from the community or by professional support providers.