Skip to content
@slackhq

Slack

On a mission to make your working life simpler, more pleasant and more productive.

Slack open source logo

 

At Slack, like most tech companies, we depend on open source software from all over the world to help us get things done. We're grateful to the open source community, the projects, and especially their maintainers who have allowed us to innovate and make our customers working lives a little bit more enjoyable.

Listed within this GitHub org, you'll find a collection of things built by Slack, which we think folks may find helpful or inspiring. Our published projects cover a wide range of complexity, from Nebula, a scalable overlay networking tool, and PanModal, a customizable presentation API for constructing modals on iOS, Kaldb, for storing observability data, to a variety of tutorials and snippets to complement our engineering blog posts.

 

In addition to publishing open source projects, Slack strives to actively participate in improving upon the core frameworks and technologies Slack is built upon, such as Electron, Webpack and Vitess.

        

In the words of our friends at Salesforce:

Open source drives our industry forward, kick-starts new careers, and builds trust in the products we create. From using projects, making improvements, and sharing our most impactful innovations with the community–in open source, we want to leave it better than we found it.

 

To read more about the exciting work we're doing, check out the Slack Engineering Blog. If you're interested in working with us, see the Slack Careers page.

 

 

Slack API Logo

If you're looking for Slack developer resources, tools, and SDKs, you'll want to check out the Slack API GitHub Org.

Pinned Loading

  1. nebula Public

    A scalable overlay networking tool with a focus on performance, simplicity and security

    Go 15.1k 1k

  2. PanModal Public

    An elegant and highly customizable presentation API for constructing bottom sheet modals on iOS.

    Swift 3.7k 536

  3. circuit Public

    ⚡️ A Compose-driven architecture for Kotlin and Android applications.

    Kotlin 1.6k 84

  4. vscode-hack Public

    Hack language & HHVM debugger support for Visual Studio Code

    TypeScript 76 40

  5. goSDL Public

    goSDL

    PHP 525 83

  6. hack-sql-fake Public

    A library for testing database driven code in Hack

    Hack 74 30

Repositories

Showing 10 of 64 repositories
  • astra Public

    Astra is a structured log search and analytics engine developed by Slack and Salesforce

    Java 222 MIT 30 17 14 Updated Mar 4, 2025
  • hakana Public

    Another typechecker for Hack, built by Slack

    Rust 78 MIT 7 0 1 Updated Mar 4, 2025
  • circuit Public

    ⚡️ A Compose-driven architecture for Kotlin and Android applications.

    Kotlin 1,604 Apache-2.0 84 13 (1 issue needs help) 8 Updated Mar 4, 2025
  • foundry Public

    Gradle and IntelliJ build tooling used in Slack's Android repo

    Kotlin 440 Apache-2.0 21 13 3 Updated Mar 3, 2025
  • hack-json-schema Public

    Generate Hack JSON Schema validators based on a JSON Schema.

    Hack 28 MIT 15 16 2 Updated Mar 3, 2025
  • compose-lints Public

    Lint checks to aid with a healthy adoption of Compose

    Kotlin 420 Apache-2.0 24 15 (5 issues need help) 13 Updated Mar 3, 2025
  • vitess Public Forked from vitessio/vitess

    Vitess is a database clustering system for horizontal scaling of MySQL.

    Go 3 Apache-2.0 2,206 0 10 Updated Mar 1, 2025
  • slack-lints Public

    A collection of custom Android/Kotlin lint checks we use in our Android and Kotlin code bases at Slack.

    Kotlin 238 Apache-2.0 15 11 (1 issue needs help) 7 Updated Feb 28, 2025
  • nebula Public

    A scalable overlay networking tool with a focus on performance, simplicity and security

    Go 15,117 MIT 1,011 86 36 Updated Feb 24, 2025
  • etcd Public Forked from etcd-io/etcd

    Distributed reliable key-value store for the most critical data of a distributed system

    Go 0 Apache-2.0 10,134 0 0 Updated Feb 21, 2025