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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 180k 37.1k

  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# 127k 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# 26.9k 4.4k

Repositories

Showing 10 of 7455 repositories
  • onnxruntime Public

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

    microsoft/onnxruntime’s past year of commit activity
    C++ 18,819 MIT 3,620 840 370 Updated Dec 29, 2025
  • Agent365-devTools Public

    The Microsoft Agent 365 DevTools CLI is a command-line interface tool designed to streamline the development, deployment, and management of Microsoft Agent 365 applications.

    microsoft/Agent365-devTools’s past year of commit activity
    C# 14 MIT 5 12 6 Updated Dec 29, 2025
  • typeagent-py Public

    Structured RAG: ingest, index, query

    microsoft/typeagent-py’s past year of commit activity
    Python 521 MIT 40 11 4 Updated Dec 29, 2025
  • OSPO Public

    A place for sharing

    microsoft/OSPO’s past year of commit activity
    JavaScript 53 CC-BY-4.0 14 0 0 Updated Dec 29, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 10,050 MIT 5,825 1,109 1,120 Updated Dec 29, 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# 2,363 MIT 328 224 (29 issues need help) 56 Updated Dec 29, 2025
  • Agents-for-net Public

    This repository is for active development of the Microsoft 365 Agent SDK components for .NET

    microsoft/Agents-for-net’s past year of commit activity
    C# 139 MIT 66 30 12 Updated Dec 29, 2025
  • typespec Public
    microsoft/typespec’s past year of commit activity
    Java 5,515 MIT 326 994 (2 issues need help) 42 Updated Dec 29, 2025
  • winget-dsc Public
    microsoft/winget-dsc’s past year of commit activity
    PowerShell 122 MIT 48 15 20 Updated Dec 29, 2025
  • fhir-server Public

    A service that implements the FHIR standard

    microsoft/fhir-server’s past year of commit activity
    TSQL 1,322 MIT 572 90 (3 issues need help) 41 Updated Dec 29, 2025
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