
Organized team chat for distributed and remote teams
Zulip is a 100% open-source team chat platform that uniquely combines the immediacy of real-time messaging with the organization of threaded discussions using its topic-based threading model. Designed for teams that need to stay productive and focused, it offers streams and topics that keep conversations structured, searchable, and easy to catch up on asynchronously.
Every message belongs to a topic within a stream, making it easy to follow, participate in, and catch up on multiple conversations without losing context.
Organize communication into streams for teams, projects, or topics, with granular subscription controls so users only see what's relevant to them.
Full-text search across all messages with advanced filters by sender, stream, topic, and date, turning chat history into a searchable knowledge base.
Native applications for Web, Desktop (Windows, macOS, Linux), iOS, and Android ensure seamless access from any device.
Connect with GitHub, Jira, Jenkins, Sentry, and 100+ other tools via native integrations, webhooks, and a powerful bot framework.
Rich message formatting with full Markdown support, syntax highlighting for code blocks, and LaTeX rendering for mathematical expressions.
Manage contributor discussions across time zones with topic-based threads that make it easy for volunteers to catch up and participate asynchronously.
Keep globally distributed teams aligned with organized, searchable conversations that don't require everyone to be online at the same time.
Facilitate scholarly discussions with LaTeX support, code formatting, and structured threads for different research topics and courses.
Deploy on-premises with SAML/SSO, LDAP integration, and compliance features for organizations with strict data sovereignty requirements.
Deploy Zulip on your own infrastructure for full data control, with the same features available in the cloud-hosted version.
SSO/SAML authentication, LDAP integration, data export tools, and compliance-ready features for enterprise deployments.
Start impromptu audio and video calls directly within Zulip, with integration support for Jitsi, Zoom, and BigBlueButton.
React to messages with emoji and create polls for quick team decisions without cluttering the conversation.
Integrate with development workflows via GitHub, CI/CD, and issue tracker bots while keeping technical discussions organized by topic.

One app to replace them all - tasks, docs, goals, and more