I found some unmerged docs on bridging Zulip and Slack: https://github.com/zulip/zulip/pull/16201
It starts with this:
"If you only want to bridge one channel in Slack with one topic in Zulip, we recommend using Matterbridge. If you want to bridge multiple channels in Slack with multiple topics in a Zulip stream, you may continue reading this guide."
Here's a preview of "this guide" as of this writing: https://github.com/zulip/zulip/blob/9a7eabdd0e25b1c3b4314d5c7fdedafcdd555a95/templates/zerver/integrations/slack.md
Last updated: Nov 01 2025 at 14:11 UTC