jitsi（以前是SIP Communicator）是一個音頻/視頻和聊天溝通，支持的協議，如SIP，XMPP / Jabber, AIM / ICQ，雅虎, Windows Live-Jitsi (previously SIP Communicator) is an audio/video and chat communicator that supports protocols such as SIP, XMPP/Jabber, AIM/ICQ, Windows Live, Yahoo