[adamtulinius]

This is very well explained in the linked post.

[nextaccountic]

Can you quote it? From what I can gather the linked post doesn't mention Zulip

[ktosobcy]

Zulip no (which has its own issues from what I read) but they are migrating to mattermost:

> Anyway, we’re moving to Mattermost. This experience has taught us that owning your data is incredibly important, and if you’re a small business especially, then I’d advise you move away too.