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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 39.2k

  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# 132k 7.9k

  4. terminal terminal Public

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

    C++ 103k 9.2k

  5. semantic-kernel semantic-kernel Public

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

    C# 27.7k 4.6k

Repositories

Showing 10 of 7774 repositories
  • qdk-chemistry Public

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

    microsoft/qdk-chemistry’s past year of commit activity
    C++ 43 MIT 1 27 11 Updated Apr 17, 2026
  • Agent365-devTools Public

    The Microsoft Agent 365 DevTools CLI is a command-line interface tool designed to streamline the development, deployment, and management of Microsoft Agent 365 applications.

    microsoft/Agent365-devTools’s past year of commit activity
    C# 31 MIT 14 2 11 Updated Apr 17, 2026
  • WindowsAppSDK Public

    The Windows App SDK empowers all Windows desktop apps with modern Windows UI, APIs, and platform features, including back-compat support, shipped via NuGet.

    microsoft/WindowsAppSDK’s past year of commit activity
    C++ 4,501 MIT 430 339 (12 issues need help) 45 Updated Apr 17, 2026
  • teams-sdk Public

    SDK focused on building AI based applications and extensions for Microsoft Teams and other Bot Framework channels

    microsoft/teams-sdk’s past year of commit activity
    TypeScript 684 MIT 263 100 13 Updated Apr 17, 2026
  • pxt-microbit Public

    A Blocks / JavaScript code editor for the micro:bit built on Microsoft MakeCode

    microsoft/pxt-microbit’s past year of commit activity
    TypeScript 797 709 373 (36 issues need help) 10 Updated Apr 17, 2026
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 183,959 MIT 39,247 5,000+ (502 issues need help) 1,737 Updated Apr 17, 2026
  • agent-framework Public

    A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET.

    microsoft/agent-framework’s past year of commit activity
    Python 9,543 MIT 1,563 599 176 Updated Apr 17, 2026
  • mu_basecore Public

    Project Mu BaseCore

    microsoft/mu_basecore’s past year of commit activity
    C 283 166 18 15 Updated Apr 17, 2026
  • webui Public

    WebUI is a language-agnostic server-side rendering framework that compiles HTML templates into a binary protocol at build time and uses Web Components Islands Architecture for client-side interactivity. There is no JavaScript runtime on the server - rendering is Rust-native, sub-millisecond, and available from any backend language.

    microsoft/webui’s past year of commit activity
    Rust 23 MIT 2 5 (1 issue needs help) 1 Updated Apr 17, 2026
  • Docker-Provider Public

    Azure Monitor for Containers

    microsoft/Docker-Provider’s past year of commit activity
    Ruby 169 115 0 4 Updated Apr 17, 2026
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