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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 183k 38.7k

  2. TypeScript TypeScript Public

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

    TypeScript 108k 13.3k

  3. PowerToys PowerToys Public

    Microsoft PowerToys is a collection of utilities that supercharge productivity and customization on Windows

    C# 131k 7.8k

  4. terminal terminal Public

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

    C++ 102k 9.1k

  5. semantic-kernel semantic-kernel Public

    Integrate cutting-edge LLM technology quickly and easily into your apps

    C# 27.5k 4.5k

Repositories

Showing 10 of 7688 repositories
  • Microsoft-AI-Decision-Framework Public

    Evidence-based decision framework for selecting the right Microsoft AI technology (M365 Copilot, Copilot Studio, Azure AI Foundry, Agent Service) for your business needs

    microsoft/Microsoft-AI-Decision-Framework’s past year of commit activity
    TypeScript 37 MIT 10 0 0 Updated Mar 21, 2026
  • CsWinRT Public

    C# language projection for the Windows Runtime

    microsoft/CsWinRT’s past year of commit activity
    C# 629 MIT 123 217 29 Updated Mar 21, 2026
  • Nova Public

    Nova: High-speed recursive zero-knowledge arguments from folding schemes

    microsoft/Nova’s past year of commit activity
    Rust 830 MIT 244 10 7 Updated Mar 21, 2026
  • windows-rs Public

    Rust for Windows

    microsoft/windows-rs’s past year of commit activity
    Rust 12,020 Apache-2.0 606 32 3 Updated Mar 21, 2026
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 10,372 MIT 6,422 1,150 459 Updated Mar 21, 2026
  • qdk Public

    Microsoft Quantum Development Kit, including the Q# programming language, resource estimator, and Quantum Katas

    microsoft/qdk’s past year of commit activity
    Rust 884 MIT 169 134 (1 issue needs help) 12 Updated Mar 22, 2026
  • mu_basecore Public

    Project Mu BaseCore

    microsoft/mu_basecore’s past year of commit activity
    C 282 166 13 13 Updated Mar 21, 2026
  • cxplat Public

    Cross platform, C abstraction layer for both user mode and kernel mode libraries

    microsoft/cxplat’s past year of commit activity
    C 32 MIT 14 2 9 Updated Mar 21, 2026
  • WSL Public

    Windows Subsystem for Linux

    microsoft/WSL’s past year of commit activity
    C++ 31,484 MIT 1,651 924 45 Updated Mar 21, 2026
  • typescript-go Public

    Staging repo for development of native port of TypeScript

    microsoft/typescript-go’s past year of commit activity
    Go 24,519 Apache-2.0 870 200 (1 issue needs help) 82 Updated Mar 22, 2026
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