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Zulip

Open-source alternative toSSlack

Zulip is an open-source team chat application that organizes live and asynchronous conversations into topic-based threads for focused collaboration.

Zulip website screenshot

Visit Zulip View repository

Total stars

Last 7 days

25,717

HostingSelf-hostable

LicenseApache-2.0

LanguagePython

Last commitAug 15, 2026

Latest releaseAug 10, 2026

Release frequency12 per year

Contributors1,325

Stars25,717

Forks10,067

Issues2,041

What it does

Zulip is an open-source team chat application designed for both live and asynchronous conversations. Its topic-based threading combines chat and email-like organization, helping teams keep discussions focused and productive.

The repository provides the Zulip server and web application. Users can run it through Zulip Cloud or self-host it directly on Ubuntu or Debian Linux, with Docker and prebuilt deployment images also documented. Zulip is distributed under the Apache 2.0 license.

Capabilities

#Searchable channel conversation history

#Search and message history

Categories

#Team Communication #Workflow Automation #Knowledge Management

Built with

GGitHub Actions

CCSS

DDocker

VVite

PPrettier

TTypeScript

PPython

BBash

EESLint

NNodeJS

ppnpm

WWebpack

JJavaScript

ZZod

SSentry

AAWS

SStripe

JJSON Schema

RRedis

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