https://gsuite.google.com/products/chat/ ?

I have this, I’ve used this, I forgot it exists. It’s on my iOS devices but I’ve never considered opening it in my work browser. I do have Slack pinned.

Not sure why you are being downvoted -- it's a fair suggestion but worth pointing out it's for enterprise/business clients only.

Hangouts Chat

* Can't communicate with anyone without GSuite

* Can't talk with our customers who use GSuite on another domain.

* Can't communicated with the "old" Hangouts, so it's utterly useless.

Another failure from Google. Whatever management structure incentivizes this crap needs to be fixed, if they ever want to expand out of their current domains.

Google had a winner with Hangouts. Instead they left it to die, while they moved on to Duo, Allo, and now Hangouts Chat. Meanwhile slack stepped in and took what should have bee their market.