Hangouts does have a Chrome app (not extension, but app). Which runs in  a pop-up mode and gives a user interface similar to android.<p>Also, it starts up with your operating system with a floating icon which stays at top of the windows if you want, and provides notifications. Your friends can use that if they want to stick to hangouts.<p>[Hangouts Chrome App](<a href="https:&#x2F;&#x2F;chrome.google.com&#x2F;webstore&#x2F;detail&#x2F;google-hangouts&#x2F;nckgahadagoaajjgafhacjanaoiihapd?hl=en" rel="nofollow">https:&#x2F;&#x2F;chrome.google.com&#x2F;webstore&#x2F;detail&#x2F;google-hangouts&#x2F;nc...</a>)