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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 181k 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 7477 repositories
  • typescript-go Public

    Staging repo for development of native port of TypeScript

    microsoft/typescript-go’s past year of commit activity
    Go 23,718 Apache-2.0 790 202 (1 issue needs help) 59 Updated Jan 13, 2026
  • typeagent-py Public

    Structured RAG: ingest, index, query

    microsoft/typeagent-py’s past year of commit activity
    Python 535 MIT 41 6 4 Updated Jan 13, 2026
  • fluentui Public

    Fluent UI web represents a collection of utilities, React components, and web components for building web applications.

    microsoft/fluentui’s past year of commit activity
    TypeScript 19,790 2,861 425 (6 issues need help) 230 Updated Jan 13, 2026
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 18,963 MIT 3,646 836 380 Updated Jan 13, 2026
  • aspire.dev Public

    The official website for all things aspire.dev.

    microsoft/aspire.dev’s past year of commit activity
    MDX 70 MIT 39 26 10 Updated Jan 13, 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 407 334 (12 issues need help) 51 Updated Jan 13, 2026
  • react-native-windows Public

    A framework for building native Windows apps with React.

    microsoft/react-native-windows’s past year of commit activity
    C++ 17,136 1,187 703 (12 issues need help) 53 Updated Jan 13, 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 2,226 MIT 267 19 5 Updated Jan 13, 2026
  • go-images Public

    Docker image packaging and publishing for the Microsoft build of Go

    microsoft/go-images’s past year of commit activity
    PowerShell 20 BSD-3-Clause 8 0 1 Updated Jan 13, 2026
  • 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 937 MIT 687 203 19 Updated Jan 13, 2026
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