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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 193k 43.4k

  2. TypeScript TypeScript Public

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

    Go 111k 14.9k

  3. PowerToys PowerToys Public

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

    C 139k 8.6k

  4. terminal terminal Public

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

    C++ 105k 9.6k

  5. semantic-kernel semantic-kernel Public

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

    C# 28.6k 4.8k

Repositories

Showing 10 of 8310 repositories
  • Microsoft-AI-Decision-Framework Public

    Evidence-based decision framework for selecting the right Microsoft AI technology (M365 Copilot, Copilot Studio, Azure AI Foundry, Agent Service) for your business needs

    microsoft/Microsoft-AI-Decision-Framework's past year of commit activity
    TypeScript 92 MIT 30 0 1 Updated Sep 26, 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 4,539 MIT 912 75 (20 issues need help) 46 Updated Sep 26, 2026
  • clarity Public

    A behavioral analytics library that uses dom mutations and user interactions to generate aggregated insights.

    microsoft/clarity's past year of commit activity
    TypeScript 2,743 MIT 284 145 (1 issue needs help) 19 Updated Sep 26, 2026
  • physical-ai-toolchain Public
    microsoft/physical-ai-toolchain's past year of commit activity
    Python 114 MIT 60 132 (1 issue needs help) 29 Updated Sep 26, 2026
  • benchpress Public

    BenchPress: calibrated LLM benchmark score completion

    microsoft/benchpress's past year of commit activity
    Python 34 MIT 2 0 1 Updated Sep 26, 2026
  • vscode Public

    Visual Studio Code

    microsoft/vscode's past year of commit activity
    TypeScript 192,930 MIT 43,392 5,000+ (471 issues need help) 2,698 Updated Sep 26, 2026
  • power-platform-skills Public

    A plugin marketplace for Claude Code/GitHub Copilot that provides Power Platform development plugins, including reusable skills, agents, and commands for building and deploying solutions.

    microsoft/power-platform-skills's past year of commit activity
    JavaScript 930 MIT 190 103 38 Updated Sep 26, 2026
  • testfx Public

    This repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.

    microsoft/testfx's past year of commit activity
    C# 1,043 MIT 312 54 10 Updated Sep 26, 2026
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs's past year of commit activity
    11,112 MIT 9,869 1,328 2,502 Updated Sep 26, 2026
  • aspire Public

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

    microsoft/aspire's past year of commit activity
    C# 6,323 MIT 998 2,173 (2 issues need help) 249 Updated Sep 26, 2026
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