High Quality Content by WIKIPEDIA articles! The XrossMediaBar (pronounced cross-media bar and officially abbreviated as XMB) is a graphical user interface developed by Sony Computer Entertainment. The interface features icons that are spread horizontally across the screen. Navigation moves the icons, instead of a cursor. These icons are used as categories to organize the options available to the user. When an icon is selected on the horizontal bar, several more appear vertically, above and below it (selectable by the up and down directions on a directional pad).