zulipZulip server and web application. Open-source team chat that helps teams stay productive and focused.

zulip

Zulip is an open-source team chat application featuring unique topic-based threading that combines the best of email and chat. Designed for both live and asynchronous conversations, it helps organizations including Fortune 500 companies and leading open source projects stay productive and focused.

Key Features

• Topic-Based Threading: Organize conversations by topic within channels, enabling better context and easier navigation compared to traditional flat chat
• Asynchronous-First Design: Built for teams across time zones with integrated email-style workflows that respect different working patterns
• Self-Hosted and Cloud Options: Deploy on your own infrastructure with Ubuntu or Debian, Docker, or use managed Zulip Cloud hosting

Use Cases

• Distributed Teams: Facilitate communication across remote and geographically distributed teams without information overload
• Open Source Communities: Organize discussions and coordination across large contributor bases with persistent, searchable conversation history
• Enterprise Organizations: Replace or augment Slack with a self-hosted alternative that meets security and compliance requirements

Who Is It For

Zulip is ideal for organizations and communities seeking a more organized, asynchronous-friendly alternative to traditional chat platforms. It serves teams ranging from small open source projects to large enterprises that value productivity, focus, and full control over their communication infrastructure.