Jitsi Meet is an open-source (Apache) WebRTC JavaScript application that uses Jitsi Videobridge to provide high quality, secure and scalable video conferences. Jitsi Meet in action can be seen at here at the session #482 of the VoIP Users Conference.
uTox
µTox the lightest and fluffiest Tox client
Tema Kanta
Share, freely and privately. Decentralized messenger with VOIP.