Google now has a dedicated web URL for Hangouts users, with the service now residing at https://hangouts.google.com/. Here, you can access all of your chat information, start up new messages, find contacts, and place calls through the service.
It’s basically a glorified extension, something that already exists inside of Gmail and for Chrome Browser users, but hey, more choices!
In the navigation drawer, you can find links to where you can download Hangouts for your chosen platform, such as Chrome OS, iOS, and Android. Although, if you are reading this, I assume you are on Android and already have Hangouts installed.
Go play with it. It’s pretty.