The world’s most productive group chat

Zulip combines the immediacy of Slack with an email threading model.
With Zulip, you can catch up on important conversations while ignoring irrelevant ones.


Tired of important discussions being disrupted by automated messages, lunch plans and random links? With Zulip, each conversation has its own thread. Looking for a conversation from two months ago? Zulip's fast and powerful search experience will delight you.

Share content with drag-and-drop file uploads, link previews, and inline images.

Learn more about what makes Zulip unique →

Fully Featured

Zulip has everything you want in group chat. Apps for the iPhone, Android and desktop. More than 90 integrations (GitHub, Jira, Stripe, Zendesk, etc.). Keyboard shortcuts. Emoji reactions. Translated into a dozen languages.

Need anything else? We probably have it.

Apps for every platform

Zulip has modern apps for every major platform, powered by Electron and React Native.




Open Source

Zulip is 100% open source software, built by a vibrant community of hundreds of developers from all around the world. With 120,000 words of developer documentation, a high quality code base, and a welcoming community, it’s easy to extend or tweak Zulip.

Zulip has a significantly larger and more active development community than other modern open source group chat solutions like Mattermost, Rocket.Chat, and

Leading organizations use Zulip:

Experience Zulip today!