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Open source projects and samples from Microsoft
README.md

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 181k 37.4k

  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# 128k 7.6k

  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# 27k 4.4k

Repositories

Showing 10 of 7487 repositories
  • mimalloc Public

    mimalloc is a compact general purpose allocator with excellent performance.

    microsoft/mimalloc’s past year of commit activity
    C 12,357 MIT 1,044 379 34 Updated Jan 14, 2026
  • component-detection Public

    Scans your project to determine what components you use

    microsoft/component-detection’s past year of commit activity
    C# 527 MIT 114 100 (6 issues need help) 47 Updated Jan 14, 2026
  • Olive Public

    Olive: Simplify ML Model Finetuning, Conversion, Quantization, and Optimization for CPUs, GPUs and NPUs.

    microsoft/Olive’s past year of commit activity
    Python 2,227 MIT 270 19 6 Updated Jan 14, 2026
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 180,657 MIT 37,374 5,000+ (544 issues need help) 959 Updated Jan 14, 2026
  • LightGBM Public

    A fast, distributed, high performance gradient boosting (GBT, GBDT, GBRT, GBM or MART) framework based on decision tree algorithms, used for ranking, classification and many other machine learning tasks.

    microsoft/LightGBM’s past year of commit activity
    C++ 18,010 MIT 3,975 429 (10 issues need help) 46 Updated Jan 14, 2026
  • WindowsAppSDK Public

    The Windows App SDK empowers all Windows desktop apps with modern Windows UI, APIs, and platform features, including back-compat support, shipped via NuGet.

    microsoft/WindowsAppSDK’s past year of commit activity
    C++ 4,398 MIT 408 331 (12 issues need help) 52 Updated Jan 14, 2026
  • vscode-mssql Public

    Visual Studio Code SQL Server extension.

    microsoft/vscode-mssql’s past year of commit activity
    TypeScript 1,822 563 143 14 Updated Jan 14, 2026
  • vscode-fabric Public

    Microsoft Fabric extension for VS Code

    microsoft/vscode-fabric’s past year of commit activity
    TypeScript 32 MIT 7 13 6 Updated Jan 14, 2026
  • techconnect26-lab1106 Public
    microsoft/techconnect26-lab1106’s past year of commit activity
    0 MIT 0 0 0 Updated Jan 14, 2026
  • azure-linux-image-tools Public
    microsoft/azure-linux-image-tools’s past year of commit activity
    Go 24 MIT 11 5 10 Updated Jan 14, 2026
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