If you are not a developer or don’t want to know about the interesting technical details, you can stop reading here :)
Bowser is interoperable with popular WebRTC enabled browsers such as Chrome and Firefox. With support for both H.264 (OpenH264) and VP8 (libvpx) video codecs Bowser is compatible with most video communication services without the need for costly transcoding.
To iterate what was said in a previous post, we are looking forward to having developers help out to make Bowser even better. Get started by heading over to GitHub. If you want support you can give us a shout at @OpenWebRTC, IRC #openwebrtc on FreeNode or send an email to the list.
More information about Bowser can be found at here.
Disclaimer: As with other implementations of the WebRTC API, some existing WebRTC apps will most likely need to be tweaked in order to work properly in Bowser. We have provided a demo app that you can start using that we have tested to work between Chrome (> stable - ice-restart bug), Firefox and Bowser: http://demo.openwebrtc.org and its source code can be found here. This "Developing for Bowser" page is will hopefully also be useful.