Marcus Downing

When writing or modifying a theme, the function wp_nav_menu() displays the contents of menus configured in your settings. If you have a lot of little menus the list can get hard to manage, so this plugin lets you group several menus under a single menu.
To use it, simply add a <code>submenu</code> parameter to the arguments of wp_nav_menu, like so:
<pre><code>wp_nav_menu(array(
 'menu' => 'header',
 'submenu' => 'About Us'
));
</code></pre>

Subtitle Filter

Adds tha ability to show only a submenu with wp_nav_menu().

chrisnowak

Ever get tired of seeing the same menu options you literally never use? Or setting up a WordPress install for a client, and want to get rid of the stuff they don’t use, or would screw up if they could?
Us too. So we made this handy little plugin that gives you little checkboxes next to each menu item and sub-menu item, even for other plugins! Just uncheck the items you don’t want to see anymore, and they’re gone! When you need them again, just recheck and they’re back! No editing core files, and being over-written upon upgrade.

Simple Admin Menu Editor

Easily and Simply show and hide what is in your admin nav. That's it.

Subtitle Filter vs Simple Admin Menu Editor