heiglandreas

This plugin adds plugins on activation to a composer.json-file and on deactivation removes them.
That way you can handle your plugins via <a href="https://getcomposer.org" rel="nofollow ugc">composer</a>.
Plugins are added to the composer.json via <a href="https://wpackagist.org" rel="nofollow ugc">wpackagist</a> which makes the wordpress-plugin-directory available via git.
But you can also manually add plugins to the pluginlist and on activation the plugin is checked for a composer.json file and if one exists the name is used to add the plugin to the composer.json-File.

Talk to Composer

Add all your active plugins to a composer.json-File.

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.

Talk to Composer vs SymfoPress Lite