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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
  • fluentui-charting-contrib Public

    Contributor tools and guides for fluentui charting library

    microsoft/fluentui-charting-contrib’s past year of commit activity
    TypeScript 23 MIT 12 2 22 Updated Dec 29, 2025
  • PSRule Public

    Validate infrastructure as code (IaC) and objects using PowerShell rules.

    microsoft/PSRule’s past year of commit activity
    C# 447 MIT 60 66 (2 issues need help) 7 Updated Dec 29, 2025
  • amplifier-foundation Public

    Foundation library for the Amplifier project

    microsoft/amplifier-foundation’s past year of commit activity
    Python 3 MIT 3 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 10,049 MIT 5,823 1,104 1,082 Updated Dec 29, 2025
  • regorus Public

    Regorus - A fast, lightweight Rego (OPA policy language) interpreter written in Rust.

    microsoft/regorus’s past year of commit activity
    Rust 248 MIT 49 24 (10 issues need help) 19 Updated Dec 28, 2025
  • RD-Agent Public

    Research and development (R&D) is crucial for the enhancement of industrial productivity, especially in the AI era, where the core aspects of R&D are mainly focused on data and models. We are committed to automating these high-value generic R&D processes through R&D-Agent, which lets AI drive data-driven AI. 🔗https://aka.ms/RD-Agent-Tech-Report

    microsoft/RD-Agent’s past year of commit activity
    Python 9,986 MIT 1,111 64 65 Updated Dec 28, 2025
  • zerotrustassessment Public

    Repository for the Zero Trust Assessment project

    microsoft/zerotrustassessment’s past year of commit activity
    HTML 241 MIT 118 28 18 Updated Dec 29, 2025
  • react-native-test-app Public

    react-native-test-app provides an app for all supported platforms as a package

    microsoft/react-native-test-app’s past year of commit activity
    TypeScript 664 MIT 98 15 (1 issue needs help) 4 Updated Dec 29, 2025
  • amplifier-app-cli Public

    Reference implementation of CLI interface for Amplifier project

    microsoft/amplifier-app-cli’s past year of commit activity
    Python 8 MIT 12 2 0 Updated Dec 29, 2025
  • vs-mef Public

    Managed Extensibility Framework (MEF) implementation used by Visual Studio

    microsoft/vs-mef’s past year of commit activity
    C# 457 MIT 90 22 10 Updated Dec 29, 2025
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