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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 178k 35.6k

  2. TypeScript TypeScript Public

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

    TypeScript 106k 13.1k

  3. PowerToys PowerToys Public

    Microsoft PowerToys is a collection of utilities that help you customize Windows and streamline everyday tasks

    C# 125k 7.4k

  4. terminal terminal Public

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

    C++ 101k 8.9k

  5. semantic-kernel semantic-kernel Public

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

    C# 26.5k 4.3k

Repositories

Showing 10 of 7218 repositories
  • vscode-copilot-chat Public

    Copilot Chat extension for VS Code

    microsoft/vscode-copilot-chat’s past year of commit activity
    TypeScript 8,738 MIT 1,305 0 75 Updated Oct 21, 2025
  • 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 4,052 MIT 549 316 49 Updated Oct 21, 2025
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 18,153 MIT 3,505 858 335 Updated Oct 21, 2025
  • azure-pipelines-extensions Public

    Collection of all RM and deployment extensions

    microsoft/azure-pipelines-extensions’s past year of commit activity
    PowerShell 294 MIT 421 147 (7 issues need help) 79 Updated Oct 21, 2025
  • kanagawa Public

    High level synthesis language for hardware design

    microsoft/kanagawa’s past year of commit activity
    C++ 58 MIT 2 7 0 Updated Oct 21, 2025
  • CsWin32 Public

    A source generator to add a user-defined set of Win32 P/Invoke methods and supporting types to a C# project.

    microsoft/CsWin32’s past year of commit activity
    C# 2,396 MIT 113 153 (2 issues need help) 14 Updated Oct 21, 2025
  • go-winio Public

    Win32 IO-related utilities for Go

    microsoft/go-winio’s past year of commit activity
    Go 1,032 MIT 195 65 31 Updated Oct 21, 2025
  • xdp-for-windows Public

    XDP speeds up networking on Windows

    microsoft/xdp-for-windows’s past year of commit activity
    C 430 MIT 53 66 7 Updated Oct 21, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 9,807 MIT 5,522 1,035 552 Updated Oct 21, 2025
  • 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# 24 MIT 9 4 14 Updated Oct 21, 2025
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