It's real-time streaming communications, and it's from Microsoft. Is it a browser-based Skype? No, because Skype uses a P2P protocol, not a Web protocol. Is it WebRTC, the open source streaming system incorporated into HTML5? No, because it's not implemented in binary code. It, such as it is, is ORTC, a W3C-sponsored community project (as opposed to a formal Working Group) intended to implement real-time streaming communications within browsers, using the JavaScript that browsers already execute internally. It's an openly stated goal of ORTC's developers that its streams must be compatible with WebRTC. Continue reading this story here.