WebRTC is a free, open project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. The WebRTC components have been optimized to best serve this purpose.
The offical documenation could be found here.
Releases can be found in the the Google group.
A framework can easily by created by using the build script. You must supply a branch (-b, String) and a version number (-v, Integer).
./build.sh [-b BRANCH] [-v VERSION]
You can find out more in the wiki