Open Source Social Software Applications

Un amico mi ha chiesto se conoscessi dei software "social" gratuiti.... ricerchina facile, con le giuste keywords: Open Source Social Software Applications! grazie a Max Kiesler ecco un bell'elenco:

Social Bookmarking
Akarru: Social BookMarking Engine
Bookmark4U
CommunityNews
ContARTE
GetBoo
Laicos - Social Bookmarking in ASP.Net
Scuttle: Open source social bookmarking
Taggly
Unalog

Social Filesharing
Asmaan
Bittorrent-2
Torrent Swapper
Tribler

Social Networking
Affelio
AstroSPACES
blogBOX
Elgg
FlightFeather: Social Networking Platform
FriendPortal - An Open Source Friendster
Geek Grep
Hiitch: The Social Networking Platform
iSocial: Social Networking CMS
Jahnet
Manusya
Melt: Online Social Networking Software
OpenPNE
Openpublic
OpenVZ
Phpizabi
PHP-Spacester
Pihook: Social Networking System
Snoss
Tag Me
The Apple Orchard
The Appleseed Project
Virtual Learning Commons
WorldSpace
Yogurt: Social Network

Social Search
Facelift
Social Semantic Search and Browsing