官方说明
Create your own social network, quickly and easily. Elgg allows you to take full advantage of the power of social technology with elegant, flexible solutions for organisations, groups and individuals.
功能说明
http://www.elgg.net/features.php
演示地址
http://test.elgg.org
下载地址
http://www.elgg.net/downloads.php
绝对免费开源
不错的程序啊！口水
