What is Kubuntu?

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. Take the tour or hear what our users have to say.

Latest news

KDE 4.1 RC 1 Released

Submitted on Tue, 2008-07-15

KDE 4.1 RC 1 has been released and packages are available for Kubuntu 8.04, the Hardy Heron. These packages install to /usr/lib/kde4 and can be installed along side your existing KDE 3 installation.

Kubuntu Intrepid Alpha 2 Available

Submitted on Mon, 2008-07-14

The second alpha release for Kubuntu Intrepid is available now for early testers. See the announcement for more information or download it directly.

Kubuntu 8.04.1 Released

Submitted on Thu, 2008-07-03

The first update to Kubuntu 8.04 has been released. Download or upgrade now.

Kubuntu Intrepid Alpha 1 Released

Submitted on Sat, 2008-06-28

The first Alpha CD for Kubuntu Intrepid has been released, featuring KDE 4.1 Beta 2. See the official announcement.

KDE 4.1 Beta 2 Released

Submitted on Wed, 2008-06-25

KDE 4.1 Beta 2 has been released and packages are available for Kubuntu 8.04, the Hardy Heron. These packages install to /usr/lib/kde4 and can be installed along side your existing KDE 3 installation.