*-buntu

Ubuntu with Gnome .. the mother (grandmother Debian)

Kubuntu with KDE

Xubuntu with Xfce

Fluxbuntu with Fluxbox

Ebuntu with Enlightenment

Edubuntu for education

Scibuntu for science

Devubuntu for developers

nUbuntu for testing servers and networks

Dubuntu in chinese

zUbuntu for IBM eServer zSeries mainframes

Ubuntu Satanic Edition vs. Ubuntu Christian Edition

Ubuntu Multi Media

related: gNewSense, X-Evian, ImpiLinux, mEDUXa, EduPuppy GioveLUG, MoLinux, Arabian Linux, Guadalinex, Linux Mint

List of Ubuntu-based Linux Distributions and Live CDs