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Zulip

Communication

4.5(18 ratings)

90% recommend

Open-source team chat with threaded conversations designed for productive async communication.

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About Zulip

Best for teams needing organized, asynchronous threaded communication.

Zulip is an open-source team chat application that organizes conversations using a unique topic-based threading model. Unlike Slack or Microsoft Teams, every message in Zulip belongs to both a stream (similar to a channel) and a topic, making it easy to follow multiple conversations without losing context. It's particularly popular with open-source communities, academic research groups, and remote teams who need to manage asynchronous communication effectively. Zulip can be self-hosted or used as a cloud service, and its open-source nature means organizations retain full control over their data.

Pros

Unique topic-based threading prevents conversations from getting lost
Fully open-source with self-hosting option available
Excellent for asynchronous communication across time zones
Generous free plan for open-source and academic communities
Powerful search and filtering across topics and streams

Cons

Topic-based model has a learning curve for new users
Smaller ecosystem of integrations compared to Slack
UI feels less polished than commercial competitors
Fewer third-party apps and bots available

Use Cases

Best for open-source projects needing organized community discussion at scale

Best for remote teams communicating asynchronously across multiple time zones

Best for academic research groups managing complex threaded technical discussions

Best for organizations requiring self-hosted chat with full data control

Key Features

6 features

Threaded conversations

Topic-based organization

Self-hostable

Full-text search

Code block support

Bot framework

SaasHunter Score

7.8/10

“Your distributed team prioritizes async communication and collaboration through threaded discussions.”

Ease of Use

7.0

Features

8.0

Pricing

9.0

Support

7.0

Integrations

8.0

Best For

Startups 8Enterprise 8Agencies 7Small Business 7Freelancers 6

Integrations

GitHubGitLabJiraZapierJenkinsSentryPagerDutyTrac

Team Chat Messaging Open Source Self Hosted

Frequently Asked Questions

What is Zulip?

Zulip is an open-source team chat platform that uses a unique topic-based threading system to organize conversations within channels. It's designed to make asynchronous communication manageable, especially for distributed teams and communities.

How much does Zulip cost?

Zulip offers a free tier for small teams and open-source/academic use with most features included. Paid plans (Zulip Cloud Standard and Plus) start at around $6.67 per user per month, and self-hosting the open-source version is completely free.

What are the main features of Zulip?

Key features include topic-based message threading, powerful full-text search, drag-and-drop file sharing, markdown support, code syntax highlighting, and over 100 native integrations. It also supports desktop, mobile, and web clients with full message history sync.

Who should use Zulip?

Zulip is ideal for remote teams, open-source communities, and academic groups who struggle with the noise and lost context of traditional chat tools. It's especially valuable for teams spread across time zones who rely heavily on asynchronous communication.

Is there a free plan for Zulip?

Yes, Zulip offers a free cloud plan that includes full message history and most features for small teams. Additionally, the self-hosted open-source version is entirely free with no user limits, and sponsored hosting is available for open-source projects and educational institutions.