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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 Public

    Visual Studio Code

    TypeScript 170k 31.8k

  2. TypeScript Public

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

    TypeScript 104k 12.8k

  3. PowerToys Public

    Windows system utilities to maximize productivity

    C# 118k 7k

  4. terminal Public

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

    C++ 97.8k 8.5k

  5. semantic-kernel Public

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

    C# 24.2k 3.8k

Repositories

Showing 10 of 6779 repositories
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    PowerShell 9,287 MIT 5,000 899 132 Updated Apr 27, 2025
  • quicreach Public

    A 'ping' equivalent tool for QUIC.

    C++ 117 MIT 28 3 (1 issue needs help) 3 Updated Apr 27, 2025
  • azure-privacy-sandbox-kms Public
    TypeScript 8 MIT 16 23 11 Updated Apr 27, 2025
  • 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.

    C# 865 MIT 273 253 28 Updated Apr 27, 2025
  • UFO Public

    The Desktop AgentOS.

    Python 6,831 MIT 860 28 3 Updated Apr 27, 2025
  • WinUI-Gallery Public

    This app demonstrates the controls available in WinUI and the Fluent Design System.

    C# 3,032 MIT 672 87 (18 issues need help) 5 Updated Apr 27, 2025
  • RD-Agent Public

    Research and development (R&D) is crucial for the enhancement of industrial productivity, especially in the AI era, where the core aspects of R&D are mainly focused on data and models. We are committed to automating these high-value generic R&D processes through our open source R&D automation tool RD-Agent, which lets AI drive data-driven AI.

    Python 4,264 MIT 363 22 27 Updated Apr 27, 2025
  • ai-gallery-extension Public
    TypeScript 4 MIT 1 0 2 Updated Apr 27, 2025
  • LightGBM Public

    A fast, distributed, high performance gradient boosting (GBT, GBDT, GBRT, GBM or MART) framework based on decision tree algorithms, used for ranking, classification and many other machine learning tasks.

    C++ 17,159 MIT 3,875 388 (10 issues need help) 41 Updated Apr 27, 2025
  • vscode Public

    Visual Studio Code

    TypeScript 170,452 MIT 31,807 5,000+ (400 issues need help) 539 Updated Apr 27, 2025
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