Warning: obm-xdg - a pipe menu to generate a list of GTK and GNOME applications - is also provided with obmenu. However, it has long-running bugs whereby it may produce an invalid output, or even not function at all. Consequently it has been
omitted from discussion.
obmenuAUR is a "user-friendly" GUI
application to edit ~/.config/openbox/menu.xml, without the need to code
in xml.