WebRTC: Video telephony without a browser plugin
The WebRTC protocol converts your web browser into a communications center, supporting video chat over a peer-to-peer connection without the need for helper apps or browser plugins.
People who use video chat and other forms of real-time Internet communication often rely on Skype or similar tools. Web browsers too often depend on Flash or Java plugins for real-time communication. The latest generation of browsers, however, offer a powerful new tool for building real-time communication into scripts and homegrown web applications. WebRTC (Real-Time Web Communication)  supplements the new HTML5 standard by bringing native real-time communication to the browser.
WebRTC is jointly promoted by browser vendors such as Google, Mozilla, and Opera. (Microsoft considers WebRTC to be too complicated and has presented UC-RTC  as its own design for real-time communication in browsers.) Although the WebRTC specification is not yet complete, the Google Chrome and Mozilla Firefox 22 web browsers already largely support it. WebRTC is a free standard described in a set of IETF documents , and W3C has already accepted a draft for a programming interface  for WebRTC in the browser.
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