cordoval

This plugin allows for the integration of Symfony2 components into WordPress. PHP5.3 is desired but not mandatory.
I advise you strongly read this [article] (http://www.craftitonline.com/2011/09/wordpress-symfony2-powered-the-ultimate-wp-plugin/) before posing any question.
<h3>Donate</h3>
Please consider donating to develop this plugin further and more speedily.
Click here : <a href="http://bit.ly/9xbyzM" rel="nofollow ugc">DONATE HERE</a>

WordPress Symfony2 Wedlock

This plugin extends Wordpress capabilities with Symfony2 components seamlessly.

netandreus

This plugin adds ability to use Symfony 2 components and bundles in your WordPress installation. You can use Symfony bundles as well as WordPress plugins and develop what you need.
Plugin homepage: http://tokarchuk.ru/
For support use WordPress.org or this page: http://tokarchuk.ru/
Thanks!

SymfoPress Lite

Integrates Symfony 2 Framework to WordPress. Allows you flexible development.

WordPress Symfony2 Wedlock vs SymfoPress Lite