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Open source projects and samples from Microsoft

Open Source at Microsoft

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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 195k 43.8k

  2. TypeScript TypeScript Public

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

    Go 112k 14.7k

  3. PowerToys PowerToys Public

    Microsoft PowerToys is a collection of utilities that supercharge productivity and customization on Windows

    C 141k 8.7k

  4. terminal terminal Public

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

    C++ 105k 9.7k

  5. semantic-kernel semantic-kernel Public

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

    C# 28.8k 4.9k

Repositories

Showing 10 of 8445 repositories
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs's past year of commit activity
    11,304 MIT 12,277 1,356 5,000+ Updated Nov 11, 2026
  • vscode-mypy Public

    Linting support for Python using the mypy linter.

    microsoft/vscode-mypy's past year of commit activity
    Python 152 MIT 44 38 4 Updated Nov 11, 2026
  • CopyOnWrite Public

    .NET library that encapsulates OS and filesystem differences in the ability to create Copy-on-Write file links

    microsoft/CopyOnWrite's past year of commit activity
    C# 154 MIT 9 4 4 Updated Nov 11, 2026
  • onnxruntime-extensions Public

    onnxruntime-extensions: A specialized pre- and post- processing library for ONNX Runtime

    microsoft/onnxruntime-extensions's past year of commit activity
    C++ 482 MIT 149 22 45 Updated Nov 11, 2026
  • amplifier-unified Public

    Unified shell for the Amplifier project

    microsoft/amplifier-unified's past year of commit activity
    Python 5 MIT 4 68 15 Updated Nov 11, 2026
  • DirectX-Specs Public

    Engineering specs for DirectX features.

    microsoft/DirectX-Specs's past year of commit activity
    HTML 858 CC-BY-4.0 187 40 11 Updated Nov 11, 2026
  • quicreach Public

    A 'ping' equivalent tool for QUIC.

    microsoft/quicreach's past year of commit activity
    C++ 152 MIT 35 1 (1 issue needs help) 0 Updated Nov 10, 2026
  • TypeScript Public

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

    microsoft/TypeScript's past year of commit activity
    Go 111,872 Apache-2.0 14,704 4,955 (1 issue needs help) 311 Updated Nov 11, 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++ 4,728 MIT 482 355 (11 issues need help) 61 Updated Nov 11, 2026
  • aspire Public

    Aspire is the tool for code-first, extensible, observable dev and deploy.

    microsoft/aspire's past year of commit activity
    C# 6,414 MIT 1,039 2,144 (2 issues need help) 365 Updated Nov 11, 2026
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