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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 178k 36.1k

  2. TypeScript TypeScript Public

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

    TypeScript 107k 13.1k

  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 8.9k

  5. semantic-kernel semantic-kernel Public

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

    C# 26.6k 4.3k

Repositories

Showing 10 of 7324 repositories
  • CAIRA Public

    Composable AI Reference Architecture (CAIRA)

    microsoft/CAIRA’s past year of commit activity
    HCL 151 MIT 28 32 (2 issues need help) 4 Updated Nov 10, 2025
  • 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# 961 MIT 288 223 42 Updated Nov 10, 2025
  • mssql-python Public

    Microsoft Python Driver for SQL Server

    microsoft/mssql-python’s past year of commit activity
    Python 293 27 36 13 Updated Nov 10, 2025
  • PowerToys Public

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

    microsoft/PowerToys’s past year of commit activity
    C# 125,597 MIT 7,468 5,000+ (220 issues need help) 92 Updated Nov 10, 2025
  • 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
    C# 4,869 MIT 690 381 84 Updated Nov 10, 2025
  • rnx-kit Public

    Modern, scalable tools. Exceptional developer experience.

    microsoft/rnx-kit’s past year of commit activity
    TypeScript 1,677 MIT 112 46 (5 issues need help) 7 Updated Nov 10, 2025
  • agent-lightning Public

    The absolute trainer to light up AI agents.

    microsoft/agent-lightning’s past year of commit activity
    Python 7,826 MIT 609 46 24 Updated Nov 10, 2025
  • ALAppExtensions Public

    Repository for collaboration on Microsoft AL application add-on and localization extensions for Microsoft Dynamics 365 Business Central.

    microsoft/ALAppExtensions’s past year of commit activity
    AL 922 MIT 685 243 20 Updated Nov 10, 2025
  • ContactCenterMessagingSDK-android Public

    Connect your android application with Dynamics 365 Contact Center using your custom interface or our out of the box native messaging experience.

    microsoft/ContactCenterMessagingSDK-android’s past year of commit activity
    Kotlin 4 6 1 3 Updated Nov 10, 2025
  • AL-Go Public

    The plug-and-play DevOps solution for Business Central app development on GitHub

    microsoft/AL-Go’s past year of commit activity
    PowerShell 410 MIT 169 21 8 Updated Nov 10, 2025
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