Zulip
Open-source team chat with topic-based threading that combines the best of email and chat for productive remote work.
What is Zulip?
Zulip is an open-source team chat application that uses topic-based threading to organize conversations, combining the immediacy of chat with the structured organization of email. It is designed to help teams stay productive and focused, whether communicating in real-time or asynchronously. The project is built and maintained by a large, active open-source community and is used by organizations ranging from Fortune 500 companies to open-source projects.
Teams and organizations—especially remote or distributed ones—seeking a structured, open-source alternative to commercial chat platforms like Slack or Microsoft Teams. It is also ideal for open-source projects and communities looking for a self-hostable, highly customizable communication tool.
Developers choose Zulip for its unique topic-based threading model, which reduces noise and improves conversation clarity compared to traditional chat apps. As the largest open-source team chat project, it offers transparency, extensive customization through self-hosting, and a strong commitment to code quality and contributor experience.
Overview
Zulip server and web application. Open-source team chat that helps teams stay productive and focused.
Use Cases
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