Currently, the world's favorite Linux distribution. Ubuntu is a free distribution developed and managed by Canonical . There are many different Ubuntu packages that are customized for PC or server use, different microprocessors, RAM levels, hard drive space, and video. Ubuntu is a derivative of the Debian distribution of Linux. It uses the Debian package system (*.deb, dpkg) and repository system (apt-get, aptitude).Ubuntu is the most viable open source competitor against Windows and Mac OSX to date. Sure, 31337 #4XX0rZ might compile a Linux kernel from scratch or custom configure their own Debian system. A Ubuntu distribution offers a one-stop installation that can be later customized according to user preferences or used as is. Almost everything can be done through the graphical interface rather than through text commands. Ubuntu can be a non-intimidating graphical GUI for casual computer users or a robust Debian-based distribution for computer nerds.