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Open source projects and samples from Microsoft

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 195k 43.8k

  2. TypeScript TypeScript Public

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

    Go 112k 14.7k

  3. PowerToys PowerToys Public

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

    C 141k 8.7k

  4. terminal terminal Public

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

    C++ 105k 9.7k

  5. semantic-kernel semantic-kernel Public

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

    C# 28.8k 4.9k

Repositories

Showing 10 of 8452 repositories
  • BCApps Public

    Repository for collaboration on Microsoft Dynamics 365 Business Central applications.

    microsoft/BCApps's past year of commit activity
    AL 723 MIT 503 295 555 Updated Nov 13, 2026
  • testfx Public

    This repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.

    microsoft/testfx's past year of commit activity
    C# 1,059 MIT 315 40 13 Updated Nov 13, 2026
  • aspire Public

    Aspire is the tool for code-first, extensible, observable dev and deploy.

    microsoft/aspire's past year of commit activity
    C# 6,425 MIT 1,039 2,171 (2 issues need help) 371 Updated Nov 13, 2026
  • vscode Public

    Visual Studio Code

    microsoft/vscode's past year of commit activity
    TypeScript 195,361 MIT 43,824 5,000+ (453 issues need help) 3,115 Updated Nov 13, 2026
  • aspire.dev Public

    The official website for all things aspire.dev.

    microsoft/aspire.dev's past year of commit activity
    MDX 206 MIT 99 68 138 Updated Nov 13, 2026
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs's past year of commit activity
    11,312 MIT 12,427 1,327 5,000+ Updated Nov 13, 2026
  • mcp-for-beginners Public

    This open-source curriculum introduces the fundamentals of Model Context Protocol (MCP) through real-world, cross-language examples in .NET, Java, TypeScript, JavaScript, Rust and Python. Designed for developers, it focuses on practical techniques for building modular, scalable, and secure AI workflows from session setup to service orchestration.

    microsoft/mcp-for-beginners's past year of commit activity
    Jupyter Notebook 17,644 MIT 5,689 4 48 Updated Nov 13, 2026
  • github-advisory-mcp Public

    MCP tools for semantic search in github/advisory-database

    microsoft/github-advisory-mcp's past year of commit activity
    TypeScript 9 MIT 4 0 26 Updated Nov 13, 2026
  • Analytics-Hub Public

    A central hub for analytics resources, linking to repositories, guides, and templates leveraging MAC, Purview, and Viva Insights.

    microsoft/Analytics-Hub's past year of commit activity
    JavaScript 37 MIT 11 2 5 Updated Nov 13, 2026
  • benchpress Public

    BenchPress: calibrated LLM benchmark score completion

    microsoft/benchpress's past year of commit activity
    Python 35 MIT 3 0 5 Updated Nov 13, 2026