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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 194k 45.7k

  2. TypeScript TypeScript Public

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

    Go 112k 17k

  3. PowerToys PowerToys Public

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

    C 139k 8.7k

  4. terminal terminal Public

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

    C++ 105k 9.7k

  5. semantic-kernel semantic-kernel Public

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

    C# 28.7k 4.8k

Repositories

Showing 10 of 8377 repositories
  • vcpkg Public

    C++ Library Manager for Windows, Linux, and MacOS

    microsoft/vcpkg's past year of commit activity
    CMake 27,523 MIT 7,761 821 282 Updated Oct 17, 2026
  • aspire Public

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

    microsoft/aspire's past year of commit activity
    C# 6,371 MIT 1,014 2,374 (2 issues need help) 279 Updated Oct 17, 2026
  • PyRIT Public

    The Python Risk Identification Tool for generative AI (PyRIT) is an open source framework built to empower security professionals and engineers to proactively identify risks in generative AI systems.

    microsoft/PyRIT's past year of commit activity
    Python 4,636 MIT 961 77 (17 issues need help) 43 Updated Oct 17, 2026
  • brewlet Public

    Run Java applications from OCI artifacts with centrally managed JDKs on Kubernetes nodes

    microsoft/brewlet's past year of commit activity
    Go 47 MIT 2 4 0 Updated Oct 16, 2026
  • litebox Public

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

    microsoft/litebox's past year of commit activity
    Rust 3,157 MIT 173 127 31 Updated Oct 17, 2026
  • vs-servicehub Public

    The service broker libraries used by Visual Studio to exchange intra- and inter-process services

    microsoft/vs-servicehub's past year of commit activity
    C# 32 MIT 16 3 17 Updated Oct 17, 2026
  • BotFramework-WebChat Public

    A highly-customizable web-based client for Azure Bot Services.

    microsoft/BotFramework-WebChat's past year of commit activity
    HTML 1,784 MIT 1,601 472 44 Updated Oct 17, 2026
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs's past year of commit activity
    11,182 MIT 10,834 1,361 3,318 Updated Oct 17, 2026
  • foundry-local Public
    microsoft/foundry-local's past year of commit activity
    C++ 2,590 378 82 30 Updated Oct 17, 2026
  • MIDI Public

    Windows MIDI Services

    microsoft/MIDI's past year of commit activity
    C++ 695 MIT 78 52 (1 issue needs help) 0 Updated Oct 17, 2026
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