Zulip: The Open-Source Team Chat for Productive Collaboration

Zulip is a powerful open-source team collaboration tool distinguished by its unique topic-based threading. This innovative approach merges the best features of email and chat, fostering productive and enjoyable remote work environments. Trusted by Fortune 500 companies, leading open-source projects, and thousands of other organizations globally, Zulip stands as the only modern team chat application engineered for both live and asynchronous communication.

Developed by a vibrant, globally distributed community, Zulip benefits from the contributions of over 97 individuals with 100+ commits each, and a total of over 1,500 contributors who merge more than 500 commits monthly. This makes Zulip the largest and fastest-growing open-source team chat project worldwide.

Join our active development community chat!

Getting Started

Contributing Code

We invite you to contribute to Zulip! Explore our comprehensive guide for new contributors to begin. We pride ourselves on Zulip's highly readable, thoroughly tested, and easily modifiable codebase. Furthermore, we provide an extensive 185,000 words of documentation specifically for Zulip contributors.

Contributing Non-Code

Your contributions extend beyond code. You can report an issue, translate Zulip into your native language, or simply provide feedback. We value your input, whether you are a long-time user or just discovering Zulip.

Checking Out Zulip

The most effective way to experience Zulip is to visit the Zulip community server. We also recommend delving into Zulip's unique approach to organizing conversations to fully understand its benefits.

Running a Zulip Server

Zulip can be self-hosted directly on Ubuntu or Debian Linux, within Docker, or by utilizing prebuilt images for Digital Ocean and Render. Discover more about self-hosting Zulip.

Using Zulip Without a Server

Explore Zulip Cloud hosting options for a managed solution. Zulip proudly sponsors free Zulip Cloud Standard for hundreds of deserving organizations, including many fellow open-source projects.

Participating in Outreach Programs

Engage with us through esteemed outreach programs such as Google Summer of Code and Outreachy.

Supporting Zulip

There are many ways to support Zulip, including advocating for its adoption within your organization, becoming a sponsor, leaving a review in mobile app stores, or simply helping others discover our platform. Additionally, we encourage you to read our blog and follow us on Twitter and LinkedIn for the latest updates.

Zulip is distributed under the generous Apache 2.0 license.