At a previous company, I used Google Hangouts Chat daily. This is a business-focussed chat app that takes seconds to load any change to the UI (e.g. changing th

At a previous company, I used Google Hangouts Chat daily. This is a business-focussed chat app that takes seconds to load any change to the UI (e.g. changing the channel you are viewing). If you are atmentioned in a channel, there's no way to find out what message thread you were atmentioned in except by scrolling up until you see the highlighted text. Every message sent to a channel other than a reply to a thread creates a new thread, and threads are displayed sorted by most recently bumped, except that your messages do not bump threads on your UI. If you wanted to avoid all these things, you could use the API to make your own client, except that you can't, because there's no API. (Technically there is an API, but because it is designed only for making bots it is not allowed to do things like read messages from a channel you are in that do not atmention you) If I recall correctly, one of the company's public incident reports explicitly mentioned Google Hangouts Chat as a reason that the incident was not fixed much more quickly. I could not find this incident report when searching just now though. Edit: This product is apparently now called "Google Chat"