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Open source projects and samples from Microsoft
README.md

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 37.3k

  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 7474 repositories
  • ApplicationInsights-JS Public

    Microsoft Application Insights SDK for JavaScript

    microsoft/ApplicationInsights-JS’s past year of commit activity
    TypeScript 674 MIT 255 92 (2 issues need help) 8 Updated Jan 12, 2026
  • rats Public

    Rats is a collection of tools to help researchers define and run experiments. It is designed to be a modular and extensible framework currently supporting building and running pipelines, integrating configs and services.

    microsoft/rats’s past year of commit activity
    Python 27 MIT 11 12 4 Updated Jan 12, 2026
  • graphrag Public

    A modular graph-based Retrieval-Augmented Generation (RAG) system

    microsoft/graphrag’s past year of commit activity
    Python 30,271 MIT 3,195 42 52 Updated Jan 12, 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 91 25 Updated Jan 12, 2026
  • typespec Public
    microsoft/typespec’s past year of commit activity
    Java 5,527 MIT 330 997 (2 issues need help) 39 Updated Jan 12, 2026
  • vsts-extension-retrospectives Public

    An Azure DevOps extension for efficient retrospectives

    microsoft/vsts-extension-retrospectives’s past year of commit activity
    TypeScript 201 MIT 95 166 (2 issues need help) 4 Updated Jan 12, 2026
  • bf-tree Public

    Bf-Tree is a modern read-write-optimized concurrent larger-than-memory range index in Rust from MS Research.

    microsoft/bf-tree’s past year of commit activity
    Rust 0 MIT 0 0 1 Updated Jan 12, 2026
  • trident Public

    Azure Linux servicing agent - security focused install, provisioning, and update

    microsoft/trident’s past year of commit activity
    Rust 19 MIT 15 14 15 Updated Jan 12, 2026
  • winapp-windows-ai Public

    An Electron addon which provides JS projections of Windows AI Foundry APIs

    microsoft/winapp-windows-ai’s past year of commit activity
    C++ 3 MIT 0 7 0 Updated Jan 12, 2026
  • techconnect26-lab1106 Public
    microsoft/techconnect26-lab1106’s past year of commit activity
    0 MIT 0 0 0 Updated Jan 12, 2026
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