traditional panel, used in GNOME Flashback

 GNOME Flashback continues the traditional desktop interface which was used
 in GNOME 2.x, but using modern GNOME technologies.
 .
 GNOME Panel is a part of the GNOME Flashback desktop, and provides panels
 and default applets for the desktop. A panel is a horizontal or vertical
 bar that can be added to a screen margin. It can contain various applets,
 such as the menu bar, application launch icons, the clock, volume controls,
 and displays for network connectivity, battery level, and other system
 monitors.