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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 177k 35k

  2. TypeScript TypeScript Public

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

    TypeScript 106k 13k

  3. PowerToys PowerToys Public

    Windows system utilities to maximize productivity

    C# 124k 7.4k

  4. terminal terminal Public

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

    C++ 100k 8.8k

  5. semantic-kernel semantic-kernel Public

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

    C# 26.1k 4.2k

Repositories

Showing 10 of 7106 repositories
  • Application-Insights-Workbooks Public

    Templates for Azure Monitor Workbooks

    microsoft/Application-Insights-Workbooks’s past year of commit activity
    JSON 624 MIT 489 16 31 Updated Sep 14, 2025
  • fluentui-charting-contrib Public

    Contributor tools and guides for fluentui charting library

    microsoft/fluentui-charting-contrib’s past year of commit activity
    TypeScript 21 MIT 13 2 14 Updated Sep 14, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 9,702 MIT 5,400 998 334 Updated Sep 14, 2025
  • vs-mef Public

    Managed Extensibility Framework (MEF) implementation used by Visual Studio

    microsoft/vs-mef’s past year of commit activity
    C# 450 MIT 88 24 11 Updated Sep 14, 2025
  • quicreach Public

    A 'ping' equivalent tool for QUIC.

    microsoft/quicreach’s past year of commit activity
    C++ 127 MIT 32 3 (1 issue needs help) 3 Updated Sep 14, 2025
  • Power-Fx Public

    Power Fx low-code programming language

    microsoft/Power-Fx’s past year of commit activity
    C# 3,307 MIT 349 268 (9 issues need help) 77 Updated Sep 14, 2025
  • testfx Public

    This repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.

    microsoft/testfx’s past year of commit activity
    C# 929 MIT 284 218 39 Updated Sep 14, 2025
  • PowerToys Public

    Windows system utilities to maximize productivity

    microsoft/PowerToys’s past year of commit activity
    C# 123,543 MIT 7,350 5,000+ (238 issues need help) 89 Updated Sep 14, 2025
  • semantic-kernel Public

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

    microsoft/semantic-kernel’s past year of commit activity
    C# 26,133 MIT 4,206 505 34 Updated Sep 14, 2025
  • 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++ 17,589 MIT 3,935 421 (11 issues need help) 49 Updated Sep 14, 2025
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