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Microsoft

Open source projects and samples from Microsoft

Open Source at Microsoft

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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 38.8k

  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# 27.6k 4.5k

Repositories

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Showing 10 of 7707 repositories
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 19,678 MIT 3,793 831 505 Updated Mar 28, 2026
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 183,127 MIT 38,788 5,000+ (514 issues need help) 1,418 Updated Mar 28, 2026
  • vcpkg Public

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

    microsoft/vcpkg’s past year of commit activity
    CMake 26,802 MIT 7,437 1,064 246 Updated Mar 28, 2026
  • perfview Public

    PerfView is a CPU and memory performance-analysis tool

    microsoft/perfview’s past year of commit activity
    C# 4,657 MIT 758 88 (2 issues need help) 7 Updated Mar 28, 2026
  • DirectXShaderCompiler Public

    This repo hosts the source for the DirectX Shader Compiler which is based on LLVM/Clang.

    microsoft/DirectXShaderCompiler’s past year of commit activity
    C++ 3,524 843 530 105 Updated Mar 28, 2026
  • playwright Public

    Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

    microsoft/playwright’s past year of commit activity
    TypeScript 85,122 Apache-2.0 5,369 596 18 Updated Mar 28, 2026
  • msagljs Public

    A JavaScript graph layout engine: port of MSAGL

    microsoft/msagljs’s past year of commit activity
    TypeScript 169 MIT 16 12 1 Updated Mar 28, 2026
  • azurelinux Public

    Linux OS for Azure 1P services and edge appliances

    microsoft/azurelinux’s past year of commit activity
    RPM Spec 4,598 MIT 607 186 508 Updated Mar 28, 2026
  • mcp Public

    Catalog of official Microsoft MCP (Model Context Protocol) server implementations for AI-powered data access and tool integration

    microsoft/mcp’s past year of commit activity
    C# 2,879 MIT 436 206 (15 issues need help) 80 Updated Mar 28, 2026
  • apm Public

    Agent Package Manager

    microsoft/apm’s past year of commit activity
    Python 777 MIT 62 14 17 Updated Mar 28, 2026
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