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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.

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  1. nebula Public

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

    Go 15.4k 1k

  2. PanModal Public

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

    Swift 3.7k 539

  3. circuit Public

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

    Kotlin 1.7k 89

  4. vscode-hack Public

    Hack language & HHVM debugger support for Visual Studio Code

    TypeScript 75 41

  5. goSDL Public

    goSDL

    PHP 524 83

  6. hack-sql-fake Public

    A library for testing database driven code in Hack

    Hack 73 30

Repositories

Showing 10 of 66 repositories
  • astra Public

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

    Java 224 MIT 30 15 1 Updated May 2, 2025
  • vitess Public Forked from vitessio/vitess

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

    Go 4 Apache-2.0 2,244 0 7 Updated May 2, 2025
  • circuit Public

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

    Kotlin 1,652 Apache-2.0 89 12 (1 issue needs help) 11 Updated May 2, 2025
  • slack-lints Public

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

    Kotlin 241 Apache-2.0 16 11 (1 issue needs help) 5 Updated May 2, 2025
  • foundry Public

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

    Kotlin 451 Apache-2.0 21 10 4 Updated May 1, 2025
  • moshi-gson-interop Public

    An interop tool for safely mixing Moshi and Gson models in JSON serialization.

    Kotlin 43 Apache-2.0 7 3 7 Updated Apr 30, 2025
  • compose-lints Public

    Lint checks to aid with a healthy adoption of Compose

    Kotlin 430 Apache-2.0 25 17 (5 issues need help) 13 Updated Apr 30, 2025
  • auto-value-kotlin Public

    An AutoValue extension that generates binary and source compatible equivalent Kotlin data classes of AutoValue models.

    Kotlin 25 Apache-2.0 3 4 9 Updated Apr 30, 2025
  • skeema Public Forked from skeema/skeema

    Declarative pure-SQL schema management for MySQL and MariaDB

    Go 0 Apache-2.0 113 0 0 Updated Apr 29, 2025
  • nebula Public

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

    Go 15,436 MIT 1,026 81 21 Updated Apr 29, 2025