Earlier quoted context omitted.
I agree. If I ever have to leave my current job (which could be soonish, startup and runway you know...) one of the things I'll miss most is the clean messaging experience provided by zulip. Everyone who likes the HN UX should be comfortable with zulip, even if it's quite a bit richer in details. We run our zulip on a smallish EC2 instance. It's probably less than a Euro/month/employee.
We pay zulip for their hosted version, which works out cheaper than slack and in any event I would like to support the development. I have had pushback from non-technical staff (and pushback from tech workers for a week, but now they seem to be very happy aside from UX bugs esp with the mobile app). If you're ever looking for work, we are hiring across the board, fully remote in Sweden or Germany. (due to tax!)
Thanks for the hint. As a German speaking Swedish that could be a great fit. I have coded a component for Lamborghini but not a part of my career I am particularly proud of. There should be smarter things to do than ruining the planet. So don't expect an application despite of zulip ;)