Mark Jaquith

APC Object Cache provides a persistent memory-based backend for the WordPress object cache. APC must be available on your PHP install.
An object cache is a place for WordPress and WordPress extensions to store the results of complex operations. On subsequent loads, 
this data can be fetched from the cache, which will be must faster than dynamically generating it on every page load.
The APC Object Cache backend is also compatible with <a href="https://wordpress.org/extend/plugins/batcache/" rel="ugc">Batcache</a>, the powerful full page caching engine that runs on WordPress.com
Be sure to read the installation instructions, as this is not a traditional plugin, and needs to be installed in a specific location.

APC Object Cache Backend

APC Object Cache provides a persistent memory-based backend for the WordPress object cache. APC must be available on your PHP install.

webhue

Smart Cache and full security your site. Some plugin cache not work fine with security plugin, so We Created this plugin. It work fine on Cache, Security and mobile plugin
Supported features:
<ul>
<li>Cache</li>
</ul>
<ul>
<li>Cache on server</li>
<li>Cache on browser</li>
<li>Store compressed pages</li>
<li>Send compressed pages</li>
</ul>
<ul>
<li>Security</li>
</ul>
<ul>
<li>Smart ban IP locked by other site install this plugin(sync ban ip)</li>
<li>Ban Ip, User Agents</li>
<li>Cache on browser</li>
<li>Limit Login</li>
<li>Notification if login limited</li>
<li>Enforce Front end, Back end, Login with SSL</li>
</ul>

APC Object Cache Backend vs WH Cache & Security