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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 179k 36.7k

  2. TypeScript TypeScript Public

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

    TypeScript 107k 13.2k

  3. PowerToys PowerToys Public

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

    C# 126k 7.5k

  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# 26.8k 4.4k

Repositories

Showing 10 of 7431 repositories
  • document-generation-solution-accelerator Public

    Document Generation Solution Accelerator using Azure OpenAI Service and Azure AI Search.

    microsoft/document-generation-solution-accelerator’s past year of commit activity
    TypeScript 166 MIT 145 2 8 Updated Dec 6, 2025
  • jl-glove Public

    ICLR 2025: We employ GloVe and random projection theory to infer immunologically meaningful T-cell receptor embeddings from adaptive immune repertoires

    microsoft/jl-glove’s past year of commit activity
    Python 2 MIT 1 0 2 Updated Dec 6, 2025
  • 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# 2,263 MIT 310 226 (47 issues need help) 46 Updated Dec 6, 2025
  • agent-lightning Public

    The absolute trainer to light up AI agents.

    microsoft/agent-lightning’s past year of commit activity
    Python 9,411 MIT 757 52 (11 issues need help) 28 Updated Dec 6, 2025
  • CsWinRT Public

    C# language projection for the Windows Runtime

    microsoft/CsWinRT’s past year of commit activity
    C# 617 MIT 120 211 18 Updated Dec 6, 2025
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 179,335 MIT 36,661 5,000+ (490 issues need help) 923 Updated Dec 6, 2025
  • dusseldorf Public

    Dusseldorf is an out-of-band security tool to help in security research.

    microsoft/dusseldorf’s past year of commit activity
    TypeScript 48 MIT 10 1 5 Updated Dec 6, 2025
  • argos Public

    An agentic system for autonomously generating explainable and reproducible time-series anomaly detection rules using LLMs.

    microsoft/argos’s past year of commit activity
    Python 15 MIT 0 1 1 Updated Dec 6, 2025
  • 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++ 3,444 813 532 137 Updated Dec 6, 2025
  • Qcodes Public

    Modular data acquisition framework

    microsoft/Qcodes’s past year of commit activity
    Python 404 MIT 339 197 49 Updated Dec 6, 2025
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