Metisse is a 2.5D windowing system, based on the X Window System. Metisse is available as a window manager for at least Mandriva One 2007, PCLinuxOS 2007 and Sabayon Linux. It has many features that set it apart from the traditional 3D "Cube workspace". Windows can be turned 3 dimensionally in any direction, enabling the user to fit more windows onto a screen, and they can be scaled, all while remaining fully operational. Metisse attempts to avoid using effects such as wobbly windows, the development team giving functionality and productivity higher priority than eye-candy.