Marco Canestrari

This plugin caches all used Menus in a single wp option, saving tons of db queries and speeding up your WordPress installation.
No configurations needed, no reason not to use it!
<ul>
<li>Author: <a href="http://www.marcocanestrari.it/" rel="nofollow ugc">Marco Canestrari</a></li>
</ul>

Easy Menu Cache

Caches all navigation menus in a single wp_option

guebs

The purpose of this plugin is to manage the cache of the “Website Acelerator” service from guebs, the hosting provider. It WILL NOT WORK on another hosting provider.
For now, it provides the following functionality:
<ul>
<li>Automatic cleanup of the cache whenever you update anything on your site.</li>
<li>On demand cache cleanup by clicking on “clear cache” button.</li>
</ul>

Guebs Speed Optimizer

With the "Guebs Speed Optimizer" plugin enabled, you're getting the very best from your hosting environment!

Easy Menu Cache vs Guebs Speed Optimizer