If you care to login, there is a thread on zulip here https://chat.zulip.org/#narrow/stream/2-general/subject/Scaling/near/360250 https://chat.zulip.org/#narrow

If you care to login, there is a thread on zulip here https://chat.zulip.org/#narrow/stream/2-general/subject/Scaling/near/360250 https://chat.zulip.org/#narrow/stream/2-general/subject/Scal... regarding scaling. Relevant info- Zulip is designed for ~15k users with real-world tests of 3k users. Not sure about concurrent users.