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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 37.3k

  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 7472 repositories
  • ai-dev-gallery Public

    An open-source project for Windows developers to learn how to add AI with local models and APIs to Windows apps.

    microsoft/ai-dev-gallery’s past year of commit activity
    C# 1,375 MIT 199 60 (2 issues need help) 6 Updated Jan 10, 2026
  • onnxruntime Public

    ONNX Runtime: cross-platform, high performance ML inferencing and training accelerator

    microsoft/onnxruntime’s past year of commit activity
    C++ 18,929 MIT 3,641 840 381 Updated Jan 10, 2026
  • TypeAgent Public

    Sample code that explores an architecture for using language models to build a personal agent that can work with application agents.

    microsoft/TypeAgent’s past year of commit activity
    TypeScript 601 MIT 84 4 1 Updated Jan 10, 2026
  • openjdk-jdk Public Forked from openjdk/jdk

    JDK main-line development

    microsoft/openjdk-jdk’s past year of commit activity
    Java 35 GPL-2.0 6,371 0 10 Updated Jan 10, 2026
  • vscode-cpptools Public

    Official repository for the Microsoft C/C++ extension for VS Code.

    microsoft/vscode-cpptools’s past year of commit activity
    TypeScript 6,007 1,692 1,407 (199 issues need help) 13 Updated Jan 10, 2026
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 10,097 MIT 5,889 1,075 341 Updated Jan 10, 2026
  • 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 24 Updated Jan 10, 2026
  • beachball Public

    The Sunniest Semantic Version Bumper

    microsoft/beachball’s past year of commit activity
    TypeScript 806 MIT 91 93 (2 issues need help) 11 Updated Jan 10, 2026
  • fluentui-react-native Public

    A react-native component library that implements the Fluent Design System.

    microsoft/fluentui-react-native’s past year of commit activity
    TypeScript 1,413 MIT 171 82 22 Updated Jan 10, 2026
  • STL Public

    MSVC's implementation of the C++ Standard Library.

    microsoft/STL’s past year of commit activity
    C++ 10,938 1,605 530 (3 issues need help) 25 Updated Jan 10, 2026
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