One of the nice things about working with symfony is it’s decoupled nature. You can use the full-stack framework or, disable and use only parts of the framework that you need. You can use (or not use at all) different high-quality ORMs (like Propel and Doctrine). Continuing with this philosophy, the symfony project team lead by Fabien Potencier is releasing some of the components that will be powering the next version of symfony. The components are available independently, so developers may use them to suite specific needs in a given project.
