Toolbar Customization Dialog
BCGControlBar Pro (MFC)
BCGControlBar for .NET
Customization dialog is a modeless dialog box (property sheet) that allows the full customization of application toolbars, menus, keyboard, mouse, user-defined tools and provides some additional options for managing the application look and feel.
"Commands" tab: user can drag a command and drop it into any toolbar/menu:
"Toolbars" tab: organize your toolbars quickly: