Collection of polyfill (backport) and incubator features for Symfony 3
Netgen Symfony Tools is an eZ Publish 4 extension that provides a way to include Twig templates, as well as running Symfony sub-requests, directly from the eZ Publish legacy templates.
The Debug component provides tools to ease debugging PHP code.
PHP frontend for security.symfony.com
A list of awesome Symfony bundles, utilities and resources.
Symfony Bundle with shared tools for Bayard projects (but every symfony project can use it)