Which version of Microsoft Internet Explorer support WebRTC?

Question

Update 2019: No IE actually supports WebRTC and no IE ever will. In 5 weeks Microsoft Edge will die and long live Chromium based Edge.

That supports WebRTC.

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Chrome and Firefox both support WebRTC.

Does Internet Explorer support it? Starting at which version?

If it does not, are there any plans to support it in the future, and if so when?

What about shimming support using projects like webrtc4all, is that a practical solution?

UPDATE: I am now after working with WebRTC for a year. WebRTC doesn't and won't work on IE (third party solutions that enable it barely work if at all and shouldn't be relied on). It is better to wait for Edge to rewrite to Chromium at which point WebRTC will be supported.

Answer 1

For now IE doesn't support WebRTC. Moreover, it seems like MS don't plan to implement WebRTC. They announced a new technology called CU-RTC-Web - kinda Microsoft analog of WebRTC.

CU-RTC-WEB: http://html5labs.interoperabilitybridges.com/cu-rtc-web/cu-rtc-web.htm

Expected that this CU-RTC-WEB will be compatible with todays WebRTC.

UPDATED

Some people also report that IE supports WebRTC when using http://www.google.com/chromeframe

UPDATED

Microsoft announced supporting WebRTC in IE: http://blogs.msdn.com/b/ie/archive/2014/10/27/bringing-interoperable-real-time-communications-to-the-web.aspx

UPDATED

While Microsoft will be adding WebRTC in IE, probably in 2015, to which version of IE is left to be seen: https://bloggeek.me/microsoft-browser-webrtc/