https://arstechnica.com/information-technology/2018/03/to-one-up-slack-google-invites-workers-to-hangout-chat-in-hangouts-chat/

Slack, Stride, HipChat—workplace chat apps that integrate with various project management and collaboration services are all the rage. It's surprising, then, that Google hasn't jumped on board yet. Workers are using Google Hangouts in offices all over the world, but it doesn't offer the kinds of features that Slack does. Now, Google has launched Hangouts Chat, its Slack competitor—sorry, "messaging platform built for teams." It's part of the G Suite at every pricing tier, though the features vary by plan.