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Open source projects and samples from Microsoft
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Open Source at Microsoft

Get Involved

Right now, open communities are building amazing software together, and there are excellent "good first issue" opportunities, if you're looking to get involved.

Visit opensource.microsoft.com to learn more!

Microsoft projects adopt the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ.

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  1. vscode vscode Public

    Visual Studio Code

    TypeScript 180k 36.8k

  2. TypeScript TypeScript Public

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

    TypeScript 107k 13.2k

  3. PowerToys PowerToys Public

    Microsoft PowerToys is a collection of utilities that help you customize Windows and streamline everyday tasks

    C# 126k 7.5k

  4. terminal terminal Public

    The new Windows Terminal and the original Windows console host, all in the same place!

    C++ 101k 9k

  5. semantic-kernel semantic-kernel Public

    Integrate cutting-edge LLM technology quickly and easily into your apps

    C# 26.8k 4.4k

Repositories

Showing 10 of 7438 repositories
  • debug-gym Public

    A Text-Based Environment for Interactive Debugging

    microsoft/debug-gym’s past year of commit activity
    Python 284 MIT 38 9 5 Updated Dec 14, 2025
  • oxidizer Public

    Oxidizer is a platform for Rust service development which bridges the gaps in the crate ecosystem to deliver a turn-key solution to enable the efficient creation of high-scale high-availability and high-performance services in Rust.

    microsoft/oxidizer’s past year of commit activity
    Rust 27 MIT 11 1 7 Updated Dec 14, 2025
  • mcscatblog Public
    microsoft/mcscatblog’s past year of commit activity
    SCSS 5 MIT 4 6 2 Updated Dec 14, 2025
  • vscode-mssql Public

    Visual Studio Code SQL Server extension.

    microsoft/vscode-mssql’s past year of commit activity
    TypeScript 1,812 556 130 17 Updated Dec 14, 2025
  • CsWinRT Public

    C# language projection for the Windows Runtime

    microsoft/CsWinRT’s past year of commit activity
    C# 618 MIT 121 213 20 Updated Dec 14, 2025
  • PowerToys Public

    Microsoft PowerToys is a collection of utilities that help you customize Windows and streamline everyday tasks

    microsoft/PowerToys’s past year of commit activity
    C# 126,477 MIT 7,533 5,000+ (221 issues need help) 94 Updated Dec 14, 2025
  • fabric-extensibility-toolkit-validator Public

    Validator component for the fabric extensibility toolkit. This allows users to check their workload against the validation criteria

    microsoft/fabric-extensibility-toolkit-validator’s past year of commit activity
    JavaScript 2 MIT 0 0 2 Updated Dec 14, 2025
  • healthcare-shared-components Public

    Shared packages used across Microsoft's health care services

    microsoft/healthcare-shared-components’s past year of commit activity
    C# 94 MIT 43 1 3 Updated Dec 14, 2025
  • qdk Public

    Azure Quantum Development Kit, including the Q# programming language, resource estimator, and Quantum Katas

    microsoft/qdk’s past year of commit activity
    Rust 814 MIT 160 149 (1 issue needs help) 8 Updated Dec 14, 2025
  • fluentui Public

    Fluent UI web represents a collection of utilities, React components, and web components for building web applications.

    microsoft/fluentui’s past year of commit activity
    TypeScript 19,745 2,860 428 (6 issues need help) 227 Updated Dec 14, 2025
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