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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 183k 38.7k

  2. TypeScript TypeScript Public

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

    TypeScript 108k 13.3k

  3. PowerToys PowerToys Public

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

    C# 131k 7.8k

  4. terminal terminal Public

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

    C++ 102k 9.2k

  5. semantic-kernel semantic-kernel Public

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

    C# 27.5k 4.5k

Repositories

Showing 10 of 7690 repositories
  • CsWinRT Public

    C# language projection for the Windows Runtime

    microsoft/CsWinRT’s past year of commit activity
    C# 629 MIT 123 217 24 Updated Mar 24, 2026
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 10,387 MIT 6,452 1,154 461 Updated Mar 24, 2026
  • aspire.dev Public

    The official website for all things aspire.dev.

    microsoft/aspire.dev’s past year of commit activity
    MDX 113 MIT 59 83 28 Updated Mar 24, 2026
  • BCApps Public

    Repository for collaboration on Microsoft Dynamics 365 Business Central applications.

    microsoft/BCApps’s past year of commit activity
    AL 551 MIT 357 90 148 Updated Mar 24, 2026
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 19,644 MIT 3,786 839 490 Updated Mar 24, 2026
  • vscode-java-dependency Public

    Manage Java projects in Visual Studio Code.

    microsoft/vscode-java-dependency’s past year of commit activity
    TypeScript 190 MIT 95 106 (2 issues need help) 12 Updated Mar 24, 2026
  • DiskANN Public

    Graph-structured Indices for Scalable, Fast, Fresh and Filtered Approximate Nearest Neighbor Search

    microsoft/DiskANN’s past year of commit activity
    Rust 1,730 MIT 388 99 (3 issues need help) 63 Updated Mar 24, 2026
  • vstest Public

    Visual Studio Test Platform is the runner and engine that powers test explorer and vstest.console.

    microsoft/vstest’s past year of commit activity
    C# 953 MIT 346 55 20 Updated Mar 24, 2026
  • skills-for-copilot-studio Public

    A skill for AI-coding tools to build and edit Microsoft Copilot Studio agents as YAML — with schema validation, templates, and AI-powered skills. Suited for Claude Code, GitHub Copilot CLI, and more.

    microsoft/skills-for-copilot-studio’s past year of commit activity
    JavaScript 71 MIT 22 12 2 Updated Mar 24, 2026
  • PowerToys Public

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

    microsoft/PowerToys’s past year of commit activity
    C# 130,870 MIT 7,811 5,000+ (201 issues need help) 146 Updated Mar 24, 2026
View all repositories

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