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Open source projects and samples from Microsoft
README.md

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 184k 39.4k

  2. TypeScript TypeScript Public

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

    TypeScript 109k 13.4k

  3. PowerToys PowerToys Public

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

    C# 132k 7.9k

  4. terminal terminal Public

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

    C++ 103k 9.2k

  5. semantic-kernel semantic-kernel Public

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

    C# 27.8k 4.6k

Repositories

Showing 10 of 7796 repositories
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    10,511 MIT 6,791 1,150 313 Updated Apr 24, 2026
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 20,166 MIT 3,855 846 540 Updated Apr 24, 2026
  • litebox Public

    A security-focused library OS supporting kernel- and user-mode execution

    microsoft/litebox’s past year of commit activity
    Rust 2,565 MIT 121 84 40 Updated Apr 23, 2026
  • WSL Public

    Windows Subsystem for Linux

    microsoft/WSL’s past year of commit activity
    C++ 31,980 MIT 1,691 900 51 Updated Apr 23, 2026
  • VirtualClient Public

    Benchmarking and monitoring automation, designed for cloud, built with .NET.

    microsoft/VirtualClient’s past year of commit activity
    C# 115 MIT 64 0 16 Updated Apr 23, 2026
  • durabletask-dotnet Public

    Out-of-process .NET SDK for the Durable Task Framework

    microsoft/durabletask-dotnet’s past year of commit activity
    C# 179 MIT 55 32 33 Updated Apr 23, 2026
  • aspire Public

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

    microsoft/aspire’s past year of commit activity
    C# 5,850 MIT 867 1,735 (4 issues need help) 139 Updated Apr 23, 2026
  • fabric-jumpstart Public

    Fabric Jumpstart provides high-quality accelerators, demos, and tutorials that install directly into your workspace in minutes.

    microsoft/fabric-jumpstart’s past year of commit activity
    Jupyter Notebook 31 MIT 17 9 4 Updated Apr 23, 2026
  • polyfills Public

    A collection of polyfills for new web platform features.

    microsoft/polyfills’s past year of commit activity
    JavaScript 1 MIT 1 0 3 Updated Apr 23, 2026
  • TypeScript-Website Public

    The Website and web infrastructure for learning TypeScript

    microsoft/TypeScript-Website’s past year of commit activity
    TypeScript 2,502 CC-BY-4.0 1,486 53 125 Updated Apr 23, 2026
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