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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 184k 39.6k

  2. TypeScript TypeScript Public

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

    TypeScript 109k 13.4k

  3. PowerToys PowerToys Public

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

    C# 133k 7.9k

  4. terminal terminal Public

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

    C++ 103k 9.3k

  5. semantic-kernel semantic-kernel Public

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

    C# 27.8k 4.6k

Repositories

Showing 10 of 7813 repositories
  • windows-rs Public

    Rust for Windows

    microsoft/windows-rs’s past year of commit activity
    Rust 12,138 Apache-2.0 612 39 2 Updated Apr 30, 2026
  • garnet Public

    Garnet is a remote cache-store from Microsoft Research that offers strong performance (throughput and latency), scalability, storage, recovery, cluster sharding, key migration, and replication features. Garnet can work with existing Redis clients.

    microsoft/garnet’s past year of commit activity
    C# 11,810 MIT 654 25 (13 issues need help) 31 Updated Apr 30, 2026
  • qdk-chemistry Public

    A high-performance toolkit for quantum and classical chemistry calculations.

    microsoft/qdk-chemistry’s past year of commit activity
    C++ 44 MIT 2 25 17 Updated Apr 30, 2026
  • atlas-design Public

    Atlas Design System serves the Microsoft Learn design & engineering teams. We are a CSS-first design system that aspires to beautiful, accessible, themeable, reading-direction-agnostic components.

    microsoft/atlas-design’s past year of commit activity
    SCSS 69 MIT 20 3 14 Updated Apr 30, 2026
  • fhir-server Public

    A service that implements the FHIR standard

    microsoft/fhir-server’s past year of commit activity
    TSQL 1,349 MIT 581 89 (2 issues need help) 74 Updated Apr 30, 2026
  • CsWin32 Public

    A source generator to add a user-defined set of Win32 P/Invoke methods and supporting types to a C# project.

    microsoft/CsWin32’s past year of commit activity
    C# 2,485 MIT 120 125 (1 issue needs help) 16 Updated Apr 30, 2026
  • Agents-for-js Public

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

    microsoft/Agents-for-js’s past year of commit activity
    TypeScript 75 MIT 37 46 17 Updated Apr 30, 2026
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    10,532 MIT 6,853 1,070 234 Updated Apr 30, 2026
  • Agents Public

    The Microsoft 365 Agent SDK simplifies building full stack, multichannel, trusted agents for platforms including M365, Teams, Copilot Studio, and Webchat.

    microsoft/Agents’s past year of commit activity
    PowerShell 872 MIT 292 101 21 Updated Apr 30, 2026
  • polyfills Public

    A collection of polyfills for new web platform features.

    microsoft/polyfills’s past year of commit activity
    JavaScript 1 MIT 1 0 4 Updated Apr 30, 2026
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