Others have mentioned Discord and Slack being closed source, but I'm interested in Zulip as an alternative. I really like the "branch off a topic at any time" t

Others have mentioned Discord and Slack being closed source, but I'm interested in Zulip as an alternative. I really like the "branch off a topic at any time" that leads to proper distinct threads of conversation that get much easier to follow. And the interface so far seems pretty polished and seamlessly responsive, with rich keyboard shortcut interface too (which I'm yet to learn tbh). I hope it too continues to grow as a good FOSS option.