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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 36.8k

  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# 126k 7.5k

  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# 26.8k 4.4k

Repositories

Showing 10 of 7438 repositories
  • oxidizer Public

    Oxidizer is a platform for Rust service development which bridges the gaps in the crate ecosystem to deliver a turn-key solution to enable the efficient creation of high-scale high-availability and high-performance services in Rust.

    microsoft/oxidizer’s past year of commit activity
    Rust 27 MIT 11 1 7 Updated Dec 12, 2025
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 179,525 MIT 36,771 5,000+ (565 issues need help) 960 Updated Dec 12, 2025
  • terminal Public

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

    microsoft/terminal’s past year of commit activity
    C++ 101,076 MIT 8,963 1,629 (499 issues need help) 45 Updated Dec 12, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 10,001 MIT 5,729 1,092 936 Updated Dec 12, 2025
  • SymCrypt-OpenSSL Public

    OpenSSL engine for use with SymCrypt cryptographic library

    microsoft/SymCrypt-OpenSSL’s past year of commit activity
    C 77 MIT 13 2 5 Updated Dec 12, 2025
  • trident Public

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

    microsoft/trident’s past year of commit activity
    Rust 16 MIT 15 17 12 Updated Dec 12, 2025
  • lisa Public

    LISA is developed and maintained by Microsoft, to empower Linux validation.

    microsoft/lisa’s past year of commit activity
    Python 317 MIT 224 36 (3 issues need help) 30 Updated Dec 12, 2025
  • mscclpp Public

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

    microsoft/mscclpp’s past year of commit activity
    C++ 443 MIT 76 11 22 Updated Dec 12, 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# 2,288 MIT 316 231 (47 issues need help) 52 Updated Dec 12, 2025
  • fluentui Public

    Fluent UI web represents a collection of utilities, React components, and web components for building web applications.

    microsoft/fluentui’s past year of commit activity
    TypeScript 19,739 2,861 432 (6 issues need help) 231 Updated Dec 12, 2025
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