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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 178k 35.8k

  2. TypeScript TypeScript Public

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

    TypeScript 107k 13.1k

  3. PowerToys PowerToys Public

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

    C# 125k 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# 26.5k 4.3k

Repositories

Showing 10 of 7273 repositories
  • mcp-dotnet-samples Public

    A comprehensive set of samples of creating and using MCP servers and clients with .NET

    microsoft/mcp-dotnet-samples’s past year of commit activity
    C# 122 MIT 40 4 4 Updated Oct 29, 2025
  • 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 518 MIT 80 3 4 Updated Oct 29, 2025
  • vscode-react-native Public

    VSCode extension for React Native - supports debugging and editor integration

    microsoft/vscode-react-native’s past year of commit activity
    TypeScript 2,701 279 5 3 Updated Oct 29, 2025
  • Agents-M365Copilot Public

    Microsoft 365 Copilot APIs Client Libraries

    microsoft/Agents-M365Copilot’s past year of commit activity
    C# 29 MIT 10 3 14 Updated Oct 29, 2025
  • doodle-to-code Public

    Curious about Generative & Agentic AI? In this beginner-friendly series, we'll break down the basics with fun doodles and simple explanations. First, you'll get the core ideas, then we'll explore how they connect to real-life examples you can actually relate to.

    microsoft/doodle-to-code’s past year of commit activity
    Bicep 120 CC-BY-4.0 18 1 6 Updated Oct 29, 2025
  • FeatureManagement-Python Public

    This library provides standardized APIs for enabling feature flags within python applications. Utilize this library to secure a consistent experience when developing applications that use patterns such as beta access, rollout, dark deployments, and more.

    microsoft/FeatureManagement-Python’s past year of commit activity
    Python 22 MIT 7 1 2 Updated Oct 29, 2025
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 18,216 MIT 3,522 852 333 Updated Oct 29, 2025
  • vscode-autopep8 Public

    Formatting support for python using autopep8.

    microsoft/vscode-autopep8’s past year of commit activity
    Python 29 MIT 19 1 4 Updated Oct 29, 2025
  • win32metadata Public

    Tooling to generate metadata for Win32 APIs in the Windows SDK.

    microsoft/win32metadata’s past year of commit activity
    C++ 1,432 137 109 (2 issues need help) 14 Updated Oct 29, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 9,832 MIT 5,555 1,021 510 Updated Oct 29, 2025
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