视频通话和聊天工具Jitsi
git clone?https://github.com/jitsi/jitsi.git

svn checkout?https://github.com/jitsi/jitsi.git

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Download a?source snapshot?from stable release (or a?nightly snapshot)

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4. developer documents

https://jitsi.org/Documentation/DeveloperDocumentation

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5. Reference documents

http://www.cnblogs.com/yourihua/archive/2012/07/07/2580147.html