Societo

Societo is an open source social site platform.

"Platform" means that it provides the two-sided features to you:

As CMS

Societo provides you to manage social contents

As library

And also, it provides many of common features as social site. Many of the features are able to reuse as Symfony2 Bundle.

Building your original social site is easy by using CMS part. You can plot any social item any where, and also can configure many things. If you get dissatisfied with features of Societo, you can use plugins to extend Societo.

Do you feel dissatisfied again? OK, it's time to benefit from Symfony2 power. As a truth, Societo is almost an empty Symfony2 application. Every features are came from Societo familly bundles. This means you can remove the specific features from Societo and added new features on Symfony2 world. So, there is nothing block you from doing what you want.