Zulip server and web application. Open-source team chat that helps teams stay productive and focused. https://zulip.com
  • Python 57.4%
  • TypeScript 18.5%
  • JavaScript 9.4%
  • CSS 4.1%
  • HTML 3.6%
  • Other 6.8%
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Anders Kaseorg f58649b9bf install-shfmt: Upgrade shfmt from 3.13.0 to 3.13.1.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2026-04-21 16:46:02 -07:00
.claude
.github ci: Add a couple more files to production suite triggers. 2026-04-18 08:33:23 -07:00
.vscode
analytics requirements: Upgrade Python requirements. 2026-04-17 15:04:02 -07:00
api_docs integrations: Add backend for Webex video call integration. 2026-04-18 16:11:00 -07:00
confirmation
corporate requirements: Upgrade Python requirements. 2026-04-17 15:04:02 -07:00
docs ui_init: Pass fetch_event_types to skip unused stream data on reload. 2026-04-21 08:13:38 -07:00
locale i18n: Updated .po files for new strings. 2026-04-21 13:07:19 -04:00
patches dependencies: Patch email-addresses TypeScript issue. 2026-04-17 15:39:27 -07:00
pgroonga
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scripts install-node: Upgrade Node.js from 2.14.0 to 2.15.0. 2026-04-17 15:39:27 -07:00
starlight_help help: Document multi-message selection quoting/forwarding. 2026-04-20 17:45:02 -07:00
static webhooks/travis: Improve topic naming. 2026-04-20 08:53:46 -07:00
templates integrations: Simplify heading semantics on catalog and communities. 2026-04-21 16:37:18 -07:00
tools install-shfmt: Upgrade shfmt from 3.13.0 to 3.13.1. 2026-04-21 16:46:02 -07:00
web integrations: Keep full-size logo on doc pages at all widths. 2026-04-21 16:37:18 -07:00
zerver integrations: Restyle doc page navigation and category pills. 2026-04-21 16:37:18 -07:00
zilencer requirements: Upgrade Python requirements. 2026-04-17 15:04:02 -07:00
zproject integrations: Add backend for Webex video call integration. 2026-04-18 16:11:00 -07:00
.codecov.yml
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.readthedocs.yaml install-uv: Upgrade uv from 0.10.9 to 0.11.7. 2026-04-17 15:04:02 -07:00
.sonarcloud.properties
CODE_OF_CONDUCT.md
CONTRIBUTING.md
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LICENSE
manage.py
NOTICE
package.json dependencies: Upgrade JavaScript dependencies. 2026-04-17 15:39:27 -07:00
pnpm-lock.yaml dependencies: Upgrade JavaScript dependencies. 2026-04-17 15:39:27 -07:00
pnpm-workspace.yaml
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pyproject.toml requirements: Upgrade Python requirements. 2026-04-17 15:04:02 -07:00
README.md
SECURITY.md
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tsconfig.json
uv.lock requirements: Upgrade Python requirements. 2026-04-17 15:04:02 -07:00
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version.py install-shfmt: Upgrade shfmt from 3.13.0 to 3.13.1. 2026-04-21 16:46:02 -07:00

Zulip overview

Zulip is an open-source organized team chat app with unique topic-based threading that combines the best of email and chat to make remote work productive and delightful. Fortune 500 companies, leading open source projects, and thousands of other organizations use Zulip every day. Zulip is the only modern team chat app that is designed for both live and asynchronous conversations.

Zulip is built by a distributed community of developers from all around the world, with 99+ people who have each contributed 100+ commits. With over 1,500 contributors merging over 500 commits a month, Zulip is the largest and fastest growing open source team chat project.

Come find us on the development community chat!

GitHub Actions build status coverage status Mypy coverage Ruff code style: prettier GitHub release docs Zulip chat Twitter GitHub Sponsors

Getting started

  • Contributing code. Check out our guide for new contributors to get started. We have invested in making Zulips code highly readable, thoughtfully tested, and easy to modify. Beyond that, we have written an extraordinary 185K words of documentation for Zulip contributors.

  • Contributing non-code. Report an issue, translate Zulip into your language, or give us feedback. We'd love to hear from you, whether you've been using Zulip for years, or are just trying it out for the first time.

  • Checking Zulip out. The best way to see Zulip in action is to drop by the Zulip development community (no account required). We also recommend reading about Zulip's unique approach to organizing conversations.

  • Running a Zulip server. Self-host Zulip directly on Ubuntu or Debian Linux, in Docker, or with prebuilt images for Digital Ocean and Render. Learn more about self-hosting Zulip.

  • Using Zulip without setting up a server. Learn about Zulip Cloud hosting options. Zulip sponsors free Zulip Cloud Standard for hundreds of worthy organizations, including fellow open-source projects.

  • Participating in outreach programs like Google Summer of Code.

  • Supporting Zulip. Learn about all the ways you can support Zulip, including contributing financially, and helping others discover it.

You may also be interested in reading our blog, and following us on LinkedIn, Mastodon, and X.

Zulip is distributed under the Apache 2.0 license.