https://www.cnet.com/news/google-brings-hangouts-chat-its-slack-competitor-to-all/ >Google's messaging app for groups -- Hangouts Chat -- used to be only for people in the company's early adopter program. But this week, Google is releasing it to any corporate customer who wants to use it. >Hangouts Chat lets co-workers, or any group of people, message each other in dedicated chat rooms. People can also share files, photos and videos. These messages can either be private or shared with various groups.