Hubl.in, the Awesome video conference service
"Hubl.in is a free and open source video conference solution built with love and designed with ethics in mind. It's the best way to initiate a communication anywhere with anybody and brings real time conversation to the next level. Hubl.in allows free communication without additional plugins."
link from: Cordova vs Xamarin with Brian Noyes @ .NET Rocks! vNext
Skype for Web no longer requires plugins, paving the way for Chromebook support | The Verge