High Quality Content by WIKIPEDIA articles! OpenGEU was a free computer operating system based upon the popular GNU/Linux distribution, Ubuntu, which in turn is based on Debian GNU/Linux. OpenGEU combined the strengths and ease of use of GNOME desktop environment with the lightweight, and graphical eye candy features of the Enlightenment window manager into a unique and user-friendly desktop. While OpenGEU was originally derived from Ubuntu, the design of the user interface made it appear significantly different to the user with original art themes, software, and tools.