[garborg]

It's had that model way before Slack, et al., kind of bolted it on. I've participated lightly in a couple orgs that use Zulip. Zulip's model does a much better job of keeping convos from getting drowned out / lost when pushed off the page, so it's much easier to log in sporadically and meaningfully participate. The apps, especially mobile have rough edges, but I still prefer it to Slack and the like, fwiw.

[brians]

It's a descendant of Zephyr, a lovely chat system that had great success in the world of stable IPv4 addresses, statically assigned, but which really hasn't made the mobile transition acceptably. Namable threads are amazing.