videoconferencia
,
chat
Videoconferencia
https://meet.jit.si/
http://sylkserver.com/
http://www.ono.es/microsite-nubo/salas-audiconferencia/
http://openmeetings.apache.org/
http://demo.bigbluebutton.org/
http://www.wiziq.com/Virtual_Classroom.aspx
http://www.meetingburner.com/
http://www.webex.com/
http://www.huddle.com/
http://www.meetin.gs/
https://www.fuze.com/
http://www.twiddla.com/
Facebook →
https://www.facebook.com/help/439078162792430/
http://tinychat.com/
http://www.skype.com/es/features/group-video-chat/
https://plus.google.com/hangouts
Referencias
http://congresoedutic.com/profiles/blog/show?id=6365062%3ABlogPost%3A120148&xg_source=msg_share_post&xgs=1
videoconferencias en tu propio servidor