All 122 Dependencies
Every package Zulip depends on, ranked by repo health score.
Zulip is an open-source team chat platform built around a unique topic-based threading model that solves the context collapse endemic to traditional chat tools. Every message belongs to a named stream and topic, making it possible to follow dozens of parallel conversations without the noise overwhelming the signal. Fortune 500 companies, leading open-source projects including Rust and Lean, universities, and research labs use Zulip as their primary communication hub.
Unlike Slack or Teams where channels become rivers of mixed-topic noise, Zulip structures conversations so you can catch up on a three-day thread in two minutes by skimming topic names. The platform is designed equally for real-time and asynchronous work — a message sent while you were sleeping retains full context when you wake up, because the topic tells you exactly what it's about before you read a word.
Zulip is built and maintained by a community of over 1,500 contributors merging more than 500 commits per month, making it one of the most actively developed open-source communication tools in existence. The entire codebase — server, web app, desktop client, and mobile apps — is released under the Apache 2.0 license with no proprietary feature tiers in the open-source release.
Deployment options range from self-hosting on Ubuntu or Debian Linux, running in Docker, using one-click images on DigitalOcean or Render, all the way to Zulip Cloud for organizations that want managed hosting. A full REST and webhooks API, along with pre-built integrations for GitHub, GitLab, Jira, Jenkins, and dozens of other services, makes Zulip a natural hub for engineering workflows.