Start your social network today. PHPFox gives you the ability to create a unique and feature packed social network. You have full control over the scalability of PHPFox.
Scalability”
One of the most important factors of a growing website is its ability to scale. Whether you host with us or on your own web server we’ve got you covered.
CDN Support.
Memcache.
Database Replication.
Server Load Balancing Support.

Demo: http://www.phpfox.com/features