Open Source Social network

I am in search of a social networking “template” to use on one of my sites.

I have seen a few on sourceforge but man they are rough,

allot of them do not even have screenshots.

I found that Chris Pirillo was looking for something along that same line

last year. As of right now, he has not yet found anything either. I even sent an email to make sure

he replied with  a simple “nothing yet”   So as my head thumps from looking

at so many .. I have to turn to the masses.

Do you have anything i  can test drive ?