Slack calls are built on webRTC, and actually it isn't too bad adding screen sharing functionality with webRTC. I wrote a blog post on this recently. And actual

Slack calls are built on webRTC, and actually it isn't too bad adding screen sharing functionality with webRTC. I wrote a blog post on this recently. And actually, with the Screen Hero team on board, should be even way simpler for them. https://medium.com/@chris_82106/implementing-webrtc-screen-sharing-in-a-web-app-late-2016-51c1a2642e4#.8r36weqpt https://medium.com/@chris_82106/implementing-webrtc-screen-s...