GearmanBundle for Symfony2
Integrates the Doctrine ORM Project into the AdminBundle
Symfony wrapper for PHP markdown
Integrates the UserBundle into the Sonata Project
Bundle for connecting TinyMCE (WYSIWYG editor) to your Symfony2 project
Add rate limits to your controllers / actions easily through annotations
Integration of the Geocoder library into Symfony2.
Symfony bundle for elasticsearch with steroids
Google Map API v3 integration for your Symfony2 project.
Integration of the Hateoas library into Symfony.