Yeah, I prefer IRC too. I ended up shutting down all my IRC servers. Most folks moved to Discord/Slack and it just wasn't worth the effort to maintain them for my use case.
I only suggest murmur / mumble because they are super east to set up.
A coworker suggested matrix, but I have been fine with murmur/mumble for my use cases. If a lot of people needed text chat, I would crank up the ol' IRC daemons and put TheLounge in front of it.
I only suggest murmur / mumble because they are super east to set up.