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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 180k 36.8k

  2. TypeScript TypeScript Public

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

    TypeScript 107k 13.2k

  3. PowerToys PowerToys Public

    Microsoft PowerToys is a collection of utilities that help you customize Windows and streamline everyday tasks

    C# 126k 7.5k

  4. terminal terminal Public

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

    C++ 101k 9k

  5. semantic-kernel semantic-kernel Public

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

    C# 26.8k 4.4k

Repositories

Showing 10 of 7440 repositories
  • mcp Public

    Catalog of official Microsoft MCP (Model Context Protocol) server implementations for AI-powered data access and tool integration

    microsoft/mcp’s past year of commit activity
    C# 2,292 MIT 316 230 (45 issues need help) 52 Updated Dec 12, 2025
  • go Public

    The Microsoft build of Go is a modified version of Go that can build FIPS compliant applications that satisfy internal Microsoft policies.

    microsoft/go’s past year of commit activity
    Go 405 BSD-3-Clause 38 138 4 Updated Dec 12, 2025
  • MIDI Public

    Windows MIDI Services

    microsoft/MIDI’s past year of commit activity
    C++ 468 MIT 50 32 1 Updated Dec 12, 2025
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 179,552 MIT 36,789 5,000+ (567 issues need help) 957 Updated Dec 12, 2025
  • roosterjs Public

    roosterjs is a framework-independent javascript rich text editor.

    microsoft/roosterjs’s past year of commit activity
    TypeScript 1,288 181 53 9 Updated Dec 12, 2025
  • typespec Public
    microsoft/typespec’s past year of commit activity
    Java 5,485 MIT 322 986 (3 issues need help) 46 Updated Dec 12, 2025
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs’s past year of commit activity
    PowerShell 10,005 MIT 5,732 1,088 878 Updated Dec 12, 2025
  • BotFramework-WebChat Public

    A highly-customizable web-based client for Azure Bot Services.

    microsoft/BotFramework-WebChat’s past year of commit activity
    HTML 1,752 MIT 1,606 409 35 Updated Dec 12, 2025
  • debug-gym Public

    A Text-Based Environment for Interactive Debugging

    microsoft/debug-gym’s past year of commit activity
    Python 284 MIT 38 9 9 Updated Dec 12, 2025
  • 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# 50 MIT 19 4 8 Updated Dec 12, 2025
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