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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 181k 37.4k

  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# 128k 7.6k

  4. terminal terminal Public

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

    C++ 101k 9k

  5. semantic-kernel semantic-kernel Public

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

    C# 27k 4.4k

Repositories

Showing 10 of 7492 repositories
  • Spartan2 Public

    Spartan: High-speed zkSNARKs without trusted setup

    microsoft/Spartan2’s past year of commit activity
    Rust 121 MIT 36 5 5 Updated Jan 16, 2026
  • service-fabric-explorer Public

    Service Fabric Explorer is a web based dashboard for visualizing the state of a Service Fabric cluster.

    microsoft/service-fabric-explorer’s past year of commit activity
    TypeScript 111 MIT 74 98 23 Updated Jan 16, 2026
  • TypeAgent Public

    Sample code that explores an architecture for using language models to build a personal agent that can work with application agents.

    microsoft/TypeAgent’s past year of commit activity
    TypeScript 603 MIT 83 4 1 Updated Jan 16, 2026
  • coe-starter-kit Public
    microsoft/coe-starter-kit’s past year of commit activity
    TypeScript 913 237 131 104 Updated Jan 16, 2026
  • onnxruntime-genai Public

    Generative AI extensions for onnxruntime

    microsoft/onnxruntime-genai’s past year of commit activity
    C++ 930 MIT 251 134 31 Updated Jan 16, 2026
  • mscclpp Public

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

    microsoft/mscclpp’s past year of commit activity
    C++ 453 MIT 80 12 23 Updated Jan 16, 2026
  • planetary-computer-apis Public

    Planetary Computer APIs

    microsoft/planetary-computer-apis’s past year of commit activity
    Python 119 MIT 32 16 17 Updated Jan 16, 2026
  • 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 6,569 MIT 1,028 523 94 Updated Jan 16, 2026
  • vscode-copilot-chat Public

    Copilot Chat extension for VS Code

    microsoft/vscode-copilot-chat’s past year of commit activity
    TypeScript 9,281 MIT 1,572 0 123 Updated Jan 16, 2026
  • CsWinRT Public

    C# language projection for the Windows Runtime

    microsoft/CsWinRT’s past year of commit activity
    C# 619 MIT 122 214 33 Updated Jan 15, 2026
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