WebRTC (Web Real-Time Communications) is an open source project that seeks to embed real-time voice, text and video communications capabilities in Web browsers.
The goal of WebRTC is to enable peer to peer (P2P) communication natively between browsers. With WebRTC, end-users do not have to download a special software application or use the same client or browser plug-in to communicate directly with each other.
The Web Real-Time Communications Working Group and the Internet Engineering Task Force (IETF) are currently working on standards for WebRTC. At this time, WebRTC is fully enabled in Google Chrome and Mozilla Firefox Web browsers.
WebRTC: A conversation between Chrome and Firefox.