Suggest an alternative to

Zulip

Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

Why do you think that https://github.com/matrix-org/sydent is a good alternative to Zulip

A URL to the alternative repo (e.g. GitHub, GitLab)

Here you can share your experience with the project you are suggesting or its comparison with Zulip. Optional.

A valid email to send you a verification link when necessary or log in.