Dolphin Community Builder:

"YouTube, MySpace, Odeo, Flickr, Match and Facebook - all in one, customizable and under your full control. You're limited only by your imagination - not by software. Dolphin Smart Community Builder is a universal, free, open source software that allows you to build any kind of online community. With a huge variety of features & options, you can quickly develop your very unique and successful website."

http://www.boonex.com/products/dolphin/