https://zulip.com/ Find accounts New organization x Product + Home + Why Zulip + Features + Self-hosting + Security + Integrations + REST API Solutions + Use cases + Business + Education + Research + Events and conferences + Open source projects + Communities + Customer stories + iDrift AS company + Technical University of Munich + University of California San Diego + Lean theorem prover community + Asciidoctor open-source community + Rust language community + Recurse Center * Pricing Resources + For users + Getting started + Help center + Community chat + Contact support + Blog + For administrators + Setting up your organization + Installing a Zulip server + Upgrading a Zulip server + GitHub * Download * Find accounts * New organization Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones. Take the tour [zulip-topi] In Zulip, you subscribe to streams. Streams are like channels in Slack or IRC. Zulip Streams in Zulip Other team chat Streams in Slack Each stream message also has a topic. Topics are unique to Zulip. Zulip Topics in Zulip Other team chat Streams in Slack Topics make it easy to catch up after a day of meetings. Zulip Stream topics in Zulip Other team chat Streams in Slack Let's click on "Tuesday night catering." The Tuesday night catering topic in Zulip The Tuesday night catering topic in Zulip Messages in Zulip retain their context even if they're sent hours after the conversation started: The Tuesday night catering topic in Zulip The Tuesday night catering topic in Zulip Messages sent hours apart are linked in the same topic. The Tuesday night catering topic in Zulip - compose box Without topics, it's hard to catch up efficiently, and hard to participate in conversations that started while you were away. The Tuesday night catering topic in Slack The Tuesday night catering topic in Slack The last message about Tuesday night catering is hidden 56 messages ago. Meanwhile, you just see a mix of unrelated messages. Zulip Free is free for an unlimited number of users. See plans and pricing [organised] Zulip vs Slack - [featured] See all features - 1. 2. 3. 4. 5. 6. 7. 8. Apps for every platform. Zulip has modern apps for every major platform, powered by Electron and React Native. Web Desktop Mobile [opensource] Open source. Zulip is 100% open source software, built by a vibrant community of over 1000 developers from all around the world. With 160,000 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 matrix.org. Learn about self-hosting Zulip or read the Zulip 5.0 release announcement. Seamless integrations with everything you use. Zulip has more than 90 native integrations. Several hundred more are available through Zapier and IFTTT. See all available integrations. Travis logo Travis CI See build results immediately GitHub logo GitHub Track issues and pull requests Heroku logo Heroku Keep up with deployments Zendesk logo Zendesk Receive support tickets and updates Jira logo Jira Monitor project bugs and issues Sentry logo Sentry See real-time error tracking Pagerduty logo Pagerduty Connect to your monitoring systems Or build your own integrations with Zulip's powerful API. Zulip's unique threading saves me well over an hour a day in working with our distributed team of engineers and PMs across 7+ time zones. We tried Slack, Mattermost, and other team chat products that claim to support threading, and nothing handles synchronous and asynchronous communication so intuitively. Jacinda Shelly, CTO, Doctor on Demand Akamai's Zulip Enterprise deployment connects over 2000 users around the planet. The threading model of conversations provides a large number of participants the ability to engage in real, ongoing, and substantive discussions, without the overwhelming experience of many other chat systems. This coordination across far-flung teams has had a significant, positive impact on the happiness and productivity of our personnel, regardless of location or seniority. Andy Ellis, Chief Security Officer, Akamai Choosing Zulip over Slack as our group chat is one of the best decisions we've ever made. Zulip makes it easy for our community of 1000 Recursers around the world to stay involved, even years after their batches finish. No other tool has a user experience that scales to a community of our size. Nick Bergson-Shilcock, founder and CEO, Recurse Center --------------------------------------------------------------------- Trusted by thousands of teams. 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