MenuLibre - An advanced menu editor that provides modern features in a clean, easy-to-use interface.
AppEditor - AppEditor allows you to edit application entries in the application menu.
Alacarte - Alacarte is an easy-to-use menu editor for GNOME that can add and edit new entries and menus.
uxdgmenu - uxdgmenu is an automated XDG Menu system for alternative Linux window managers.
obconf - The Openbox configuration tool.