Top 40 Free Downloadable Open Source Social Networking Software | Vivalogo Resources

Top 40 Free Downloadable Open Source Social Networking Software | Vivalogo Resources: "This is Vivalogo's list of best free, downloadable, open source social networking software (kinda hard to say all these words :) ).
Unlike some other lists you may find on the net, this one contains only really downloadable and functional software.
Note: listed in no particular order.
spree

spree is an expert search engine where users ask questions to find other participating users, who are knowledgeable in that area and willing to help.
iSocial

iSocial is a free social networking CMS software that allows you to create your own Friendster and Orkut like sites. Use bookmarks, dating and create groups with just one mouse click.
Mahara

Mahara is fully featured electronic portfolio, weblog, resume builder, and social networking system for connecting users and creating online communities.
Yogurt

This is a Social Network module for xoops CMS. You have seen Facebook, Orkut, Myspace , try Yogurt for Xoops!
VMukti

VMukti is a Unified Social Collaborative conferencing engine. Allows access through personalized, mashable web-interface. Core features:- Video conferencing, Audio conferencing, IP Telephony, Desktop sharing, Chat, Whiteboard, Presentation & More.
The PeopleAggregator

The PeopleAggregator is a next-generation social networking system that goes beyond the"