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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 38.6k

  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 7686 repositories
  • CoseSignTool Public

    CoseSignTool is a platform-agnostic command line application to COSE sign files and validate COSE signatures. CoseHandler is a library of functions for COSE signing and validation for use by .NET applications.

    microsoft/CoseSignTool’s past year of commit activity
    C# 52 MIT 21 4 8 Updated Mar 19, 2026
  • 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 11,908 MIT 1,379 74 75 Updated Mar 19, 2026
  • Multi-Agent-Custom-Automation-Engine-Solution-Accelerator Public

    The Multi-Agent Custom Automation Engine Solution Accelerator is an AI-driven system that manages a group of AI agents to accomplish tasks based on user input. Powered by Microsoft Agent Framework, Azure Foundry, Azure Cosmos DB, and infrastructure services, it provides a reference application, allowing you to hit the ground running.

    microsoft/Multi-Agent-Custom-Automation-Engine-Solution-Accelerator’s past year of commit activity
    Python 747 MIT 544 6 35 Updated Mar 19, 2026
  • o365-moodle Public

    Office 365 and Azure Active Directory plugins for Moodle

    microsoft/o365-moodle’s past year of commit activity
    PHP 201 GPL-3.0 148 225 122 Updated Mar 19, 2026
  • vstest Public

    Visual Studio Test Platform is the runner and engine that powers test explorer and vstest.console.

    microsoft/vstest’s past year of commit activity
    C# 952 MIT 346 66 10 Updated Mar 19, 2026
  • go-images-versions Public

    Detailed information about the last images published containing the Microsoft build of Go.

    microsoft/go-images-versions’s past year of commit activity
    3 MIT 4 0 0 Updated Mar 19, 2026
  • ai4s-jobq Public

    Enables multiple users to push work items to an Azure Queue, while one or more workers pull and process tasks asynchronously.

    microsoft/ai4s-jobq’s past year of commit activity
    Python 6 MIT 2 1 0 Updated Mar 19, 2026
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 182,830 MIT 38,614 5,000+ (522 issues need help) 1,307 Updated Mar 19, 2026
  • semantic-kernel Public

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

    microsoft/semantic-kernel’s past year of commit activity
    C# 27,506 MIT 4,518 399 110 Updated Mar 19, 2026
  • BCApps Public

    Repository for collaboration on Microsoft Dynamics 365 Business Central applications.

    microsoft/BCApps’s past year of commit activity
    AL 551 MIT 354 87 107 Updated Mar 19, 2026
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