bigbluebutton:http://bigbluebutton.org/videos/
bigbluebutton github(java):https://github.com/bigbluebutton/bigbluebutton
bigbluebutton安装手册(看完会学会很多)：http://docs.bigbluebutton.org/install/install.html
openmeetings(java) :http://openmeetings.apache.org/
原文：http://www.cnblogs.com/qq-757617012/p/5714472.html