As a fellow Zulip user and minor contributor, I wholeheartedly agree. In addition to coordinating development teams on three continents, we also use Zulip as a

As a fellow Zulip user and minor contributor, I wholeheartedly agree. In addition to coordinating development teams on three continents, we also use Zulip as an integration hub. git commits go in the #commits channel, jenkins build status to #builds, and run-time errors to #errors. We use errbit (API-compatible Airbrake clone) for error reporting and Zulip didn't have an errbit integration. So I wrote one, and they integrated it within a few days. The Zulip team was super-responsive and easy to work with. It certainly helped that they had excellent docs on how to write integrations, and tons of examples. Go Zulip!