Danila Vershinin

This plugin clears OPcache after updating WordPress core, themes, and files. 
Unlike other plugins, it is also compatible with <a href="https://www.getpagespeed.com/server-setup/performance-friendly-wordpress-updates" rel="nofollow ugc">WordPress updates made by Linux cron</a>.
<h3>Notice</h3>
<ul>
<li>Important: To use this plugin, check the following.
<ol>
<li>PHP 5.5 or later, Did you compile PHP with –enable-opcache option?</li>
<li>PHP 5.4 or earlier, Did you installed PECL ZendOpcache?</li>
<li>If not, please see <a href="http://php.net/book.opcache" rel="nofollow ugc">this document</a> and enable/install OPcache.</li>
<li>The <a href="https://github.com/gordalina/cachetool" rel="nofollow ugc">cachetool</a> utility must be configured in order for OPCache to be cleared by this plugin. It must be in your <code>PATH</code> and named <code>cachetool</code>.</li>
<li>The “which” utility (typically preinstalled), thus a Linux OS</li>
</ol>
</li>
</ul>

OPcache Reset

Automatic OPcache reset for WordPress. Invalidates both in-memory and file-based OPCache upon upgrading WordPress.

OpenSource Technologies Pvt Ltd

This plugin embed and load the Zend Framework libraries so that they can be shared by different WordPress plugins.
Zend Framework is an open source, object-oriented web application framework implemented in PHP 5 and licensed under the New BSD License.
The current version use Zend Framework 2.1.4

Zend Framework for wordpress

Simply make Zend Framework libraries available on the Wordpress instance.

OPcache Reset vs Zend Framework for wordpress