MenuMaker is a menu generation utility. It is capable of finding lots of installed programs and generating a root MenuMaker is a menu consistent across all supported X window managers, so one will get (almost) the same menu no matter what window manager is selected. It is pure Python application hence it runs on every relevant system.
Supported X window managers (As of 0.99.6)
BlackBox
Deskmenu
FluxBox
IceWM
OpenBox, version 3
PekWM
WindowMaker
XFCE, version 4
http://sourceforge.net/projects/menumaker/