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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 37.1k

  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# 127k 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# 26.9k 4.4k

Repositories

Showing 10 of 7453 repositories
  • fluentui-charting-contrib Public

    Contributor tools and guides for fluentui charting library

    microsoft/fluentui-charting-contrib’s past year of commit activity
    TypeScript 23 MIT 12 2 22 Updated Dec 28, 2025
  • vscode-mssql Public

    Visual Studio Code SQL Server extension.

    microsoft/vscode-mssql’s past year of commit activity
    TypeScript 1,815 555 141 11 Updated Dec 28, 2025
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 180,068 MIT 37,084 5,000+ (556 issues need help) 927 Updated Dec 28, 2025
  • simplechat Public

    Secure AI conversations with documents, video, audio, and more. Personal workspaces for focused context, group spaces for shared insight. Classify docs, reuse prompts, and extend with modular features.

    microsoft/simplechat’s past year of commit activity
    Python 105 89 125 4 Updated Dec 28, 2025
  • vcpkg-tool Public

    Components of microsoft/vcpkg's binary.

    microsoft/vcpkg-tool’s past year of commit activity
    C++ 539 MIT 337 12 49 Updated Dec 28, 2025
  • CsWinRT Public

    C# language projection for the Windows Runtime

    microsoft/CsWinRT’s past year of commit activity
    C# 619 MIT 121 213 33 Updated Dec 28, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 10,049 MIT 5,816 1,101 1,072 Updated Dec 28, 2025
  • rushstack Public

    Monorepo for tools developed by the Rush Stack community

    microsoft/rushstack’s past year of commit activity
    TypeScript 6,386 658 853 (129 issues need help) 134 Updated Dec 28, 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++ 17,967 MIT 3,967 425 (10 issues need help) 44 Updated Dec 28, 2025
  • ALAppExtensions Public

    Repository for collaboration on Microsoft AL application add-on and localization extensions for Microsoft Dynamics 365 Business Central.

    microsoft/ALAppExtensions’s past year of commit activity
    AL 935 MIT 685 210 18 Updated Dec 28, 2025
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