You are looking for a BNC[1]. Quassel is a superset of the features you could expect in one.
I think that there is a lot of people in your situation. They don't know about the existence of this tools or think their setup is hard or time consuming and ends using Slack.
I think that there is a lot of people in your situation. They don't know about the existence of this tools or think their setup is hard or time consuming and ends using Slack.
[1] https://en.wikipedia.org/wiki/BNC_(software)