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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 Public

    Visual Studio Code

    TypeScript 175k 34k

  2. TypeScript Public

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

    TypeScript 105k 12.9k

  3. PowerToys Public

    Windows system utilities to maximize productivity

    C# 121k 7.2k

  4. terminal Public

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

    C++ 99k 8.7k

  5. semantic-kernel Public

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

    C# 25.6k 4.1k

Repositories

Showing 10 of 6982 repositories
  • mscclpp Public

    MSCCL++: A GPU-driven communication stack for scalable AI applications

    C++ 390 MIT 62 11 22 Updated Jul 28, 2025
  • 0 MIT 1 0 0 Updated Jul 28, 2025
  • winget-cli Public

    WinGet is the Windows Package Manager. This project includes a CLI (Command Line Interface), PowerShell modules, and a COM (Component Object Model) API (Application Programming Interface).

    C++ 24,553 MIT 1,580 1,170 23 Updated Jul 28, 2025
  • debug-gym Public

    A Text-Based Environment for Interactive Debugging

    Python 242 MIT 22 2 4 Updated Jul 28, 2025
  • MIDI Public

    Windows MIDI Services

    C++ 406 MIT 37 58 0 Updated Jul 28, 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 R&D-Agent, which lets AI drive data-driven AI. 🔗https://aka.ms/RD-Agent-Tech-Report

    Python 6,750 MIT 663 50 49 Updated Jul 28, 2025
  • onnxruntime Public

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

    C++ 17,318 MIT 3,359 2,028 261 Updated Jul 28, 2025
  • vsts-extension-retrospectives Public

    An Azure DevOps extension for efficient retrospectives

    TypeScript 197 MIT 88 200 (3 issues need help) 11 Updated Jul 28, 2025
  • opensource-management-portal Public

    Microsoft's monolithic, opinionated Open Source Management Portal enabling enterprise scale self-service powered by the GitHub API 🏔🧑‍💻🧰

    TypeScript 512 MIT 131 9 10 Updated Jul 28, 2025
  • pxt Public

    Microsoft MakeCode (PXT - Programming eXperience Toolkit)

    TypeScript 2,207 MIT 602 204 (2 issues need help) 52 Updated Jul 28, 2025