Ring4 Meeting - Dead simple video conferencing - free, in browser
YouTube - Our mission is to give everyone a voice and show them the world.
Stork.ai - AI-Based Collaboration for Hybrid Teams. Rich media messaging, advanced video and voice conferencing, auto-transcribing and screen sharing. Serendipitous meetings at the water-cooler with your human and AI teammates.
Facebook Gaming - Watch and stream live games on Facebook
openmeet - Account free video conferencing with a rooms component that lets you use VC within a physical meeting room. The server can also be hosted in your own cloud for extra privacy/security.
YouNow - YouNow is a free social networking app that allows you to connect with other users via live video broadcast.