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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 184k 39.1k

  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 7.9k

  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# 27.7k 4.5k

Repositories

Showing 10 of 7741 repositories
  • mattersim Public

    MatterSim: A deep learning atomistic model across elements, temperatures and pressures.

    microsoft/mattersim’s past year of commit activity
    Jupyter Notebook 528 MIT 77 15 4 Updated Apr 7, 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# 131,417 MIT 7,867 5,000+ (200 issues need help) 110 Updated Apr 7, 2026
  • vscode-documentdb Public

    DocumentDB Extension for VS Code

    microsoft/vscode-documentdb’s past year of commit activity
    TypeScript 22 MIT 9 67 (1 issue needs help) 8 Updated Apr 7, 2026
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    10,433 MIT 6,585 1,146 497 Updated Apr 7, 2026
  • EventLogExpert Public
    microsoft/EventLogExpert’s past year of commit activity
    C# 255 MIT 30 4 1 Updated Apr 7, 2026
  • agent-framework Public

    A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET.

    microsoft/agent-framework’s past year of commit activity
    Python 9,078 MIT 1,476 580 174 Updated Apr 7, 2026
  • msquic Public

    Cross-platform, C implementation of the IETF QUIC protocol, exposed to C, C++, C# and Rust.

    microsoft/msquic’s past year of commit activity
    C 4,668 MIT 655 226 (25 issues need help) 84 Updated Apr 7, 2026
  • vscode-cmake-tools Public

    CMake Tools provides a robust, convenient workflow for CMake projects in VS Code. It simplifies configurations with CMake presets, supports IntelliSense and built-in debugging for CMake scripts, and offers configurable tasks. Its customizable interface allows for efficient project control, while also simplifying test execution and monitoring.

    microsoft/vscode-cmake-tools’s past year of commit activity
    TypeScript 1,659 MIT 524 452 (40 issues need help) 41 Updated Apr 7, 2026
  • codeql Public Forked from github/codeql

    CodeQL: the libraries and queries that power security researchers around the world, as well as code scanning in GitHub Advanced Security

    microsoft/codeql’s past year of commit activity
    C# 24 MIT 2,214 14 18 Updated Apr 7, 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++ 17,221 1,193 696 (12 issues need help) 47 Updated Apr 7, 2026
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