What is Zulip?
An open-source team chat app. Conversations are organized into channels and topics, so each discussion stays in its own thread.
Is Zulip free?
The software is open source under Apache 2.0, with all Zulip features included. On AWS you pay for the instance and the software fee shown on the listing, not per user.
Do mobile notifications work for everyone?
Zulip's free self-hosted plan includes mobile push notifications for up to 10 users, or without limit for eligible communities. Larger teams need one of Zulip's paid self-hosted plans for unlimited notifications.
Which instance size should I choose?
t3a.small is a workable baseline for a small team. Move up to t3a.medium or larger as your users and message history grow.
Why do I need SMTP settings?
Zulip emails account confirmations, invitations and password resets. Without working SMTP, new users cannot finish signing up.
Why does my new server say "No organization found"?
A fresh Zulip server has no organization yet. Generate a one-time creation link on the server, as the developer guide shows, and open it to create yours.
Does it set up SSL?
Yes, automatically when your domain is hosted on Route 53. Otherwise, run Zulip's certbot script on the server.
Does Zulip support single sign-on?
Yes. Zulip supports SAML and OpenID Connect sign-in, so it can sit behind the same identity provider as your other tools.