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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 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 7439 repositories
  • msquic Public

    Cross-platform, C implementation of the IETF QUIC protocol, exposed to C, C++, C# and Rust.

    microsoft/msquic’s past year of commit activity
    C 4,554 MIT 626 206 (23 issues need help) 75 Updated Dec 13, 2025
  • hve-core Public

    A refined collection of Hypervelocity Engineering components (instructions, prompts, agents) to start your project off right, or upgrade your existing projects to get the most out of all Copilots

    microsoft/hve-core’s past year of commit activity
    PowerShell 42 MIT 18 16 9 Updated Dec 13, 2025
  • vscode Public

    Visual Studio Code

    microsoft/vscode’s past year of commit activity
    TypeScript 179,554 MIT 36,795 5,000+ (567 issues need help) 958 Updated Dec 13, 2025
  • vsts-extension-retrospectives Public

    An Azure DevOps extension for efficient retrospectives

    microsoft/vsts-extension-retrospectives’s past year of commit activity
    TypeScript 200 MIT 95 164 (2 issues need help) 4 Updated Dec 13, 2025
  • mscclpp Public

    MSCCL++: A GPU-driven communication stack for scalable AI applications

    microsoft/mscclpp’s past year of commit activity
    C++ 443 MIT 76 11 23 Updated Dec 13, 2025
  • vscode-cpptools Public

    Official repository for the Microsoft C/C++ extension for VS Code.

    microsoft/vscode-cpptools’s past year of commit activity
    TypeScript 5,982 1,686 1,405 (194 issues need help) 9 Updated Dec 13, 2025
  • 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# 11 MIT 4 11 6 Updated Dec 12, 2025
  • sbom-tool Public

    The SBOM tool is a highly scalable and enterprise ready tool to create SPDX 2.2 compatible SBOMs for any variety of artifacts.

    microsoft/sbom-tool’s past year of commit activity
    C# 1,945 MIT 184 44 (4 issues need help) 31 Updated Dec 13, 2025
  • onnxruntime-genai Public

    Generative AI extensions for onnxruntime

    microsoft/onnxruntime-genai’s past year of commit activity
    C++ 902 MIT 239 132 27 Updated Dec 13, 2025
  • trident Public

    Azure Linux servicing agent - security focused install, provisioning, and update

    microsoft/trident’s past year of commit activity
    Rust 16 MIT 15 17 12 Updated Dec 13, 2025
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