Zulip is a powerful, open source group chat application that combines the immediacy of real-time chat with the productivity benefits of threaded conversations. Zulip is used by open source projects, Fortune 500 companies, large standards bodies, and others who need a real-time chat system that allows users to easily process hundreds or thousands of messages a day. With over 300 contributors merging over 500 commits a month, Zulip is also the largest and fastest growing open source group chat project.

Code Quality Rank: L2
Programming language: Python
License: Apache License 2.0
Tags: Group Chat     ChatOps     Communications    
Latest version: v4.0-dev

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Zulip overview

Zulip is an open-source team collaboration tool with unique topic-based threading that combines the best of email and chat to make remote work productive and delightful. Fortune 500 companies, leading open source projects, and thousands of other organizations use Zulip every day. Zulip is the only modern team chat app that is designed for both live and asynchronous conversations.

Zulip is built by a distributed community of developers from all around the world, with 74+ people who have each contributed 100+ commits. With over 1000 contributors merging over 500 commits a month, Zulip is the largest and fastest growing open source team chat project.

Come find us on the development community chat!

GitHub Actions build status coverage status Mypy coverage code style: black code style: prettier GitHub release docs Zulip chat Twitter GitHub Sponsors

Getting started

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Zulip is distributed under the Apache 2.0 license.

*Note that all licence references and agreements mentioned in the Zulip README section above are relevant to that project's source code only.