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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 183k 38.4k

  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# 130k 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# 27.4k 4.5k

Repositories

Showing 10 of 7645 repositories
  • 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
    Python 7,771 MIT 1,284 584 133 Updated Mar 10, 2026
  • fhir-server Public

    A service that implements the FHIR standard

    microsoft/fhir-server’s past year of commit activity
    TSQL 1,339 MIT 575 89 (2 issues need help) 54 Updated Mar 9, 2026
  • injectorppforrust Public

    Injectorpp is a powerful tool designed to facilitate the writing of unit tests without the need to introduce traits solely for testing purposes. It streamlines the testing process by providing a seamless and efficient way to abstract dependencies, ensuring that your code remains clean and maintainable.

    microsoft/injectorppforrust’s past year of commit activity
    Rust 391 MIT 15 21 (2 issues need help) 0 Updated Mar 9, 2026
  • typespec Public
    microsoft/typespec’s past year of commit activity
    Java 5,619 MIT 340 1,015 (2 issues need help) 59 Updated Mar 10, 2026
  • vscode-sandbox-runtime Public Forked from anthropic-experimental/sandbox-runtime

    A lightweight sandboxing tool for enforcing filesystem and network restrictions on arbitrary processes at the OS level, without requiring a container.

    microsoft/vscode-sandbox-runtime’s past year of commit activity
    TypeScript 0 Apache-2.0 208 0 1 Updated Mar 10, 2026
  • litebox Public

    A security-focused library OS supporting kernel- and user-mode execution

    microsoft/litebox’s past year of commit activity
    Rust 2,446 MIT 108 72 17 Updated Mar 10, 2026
  • vscode-copilot-chat Public

    Copilot Chat extension for VS Code

    microsoft/vscode-copilot-chat’s past year of commit activity
    TypeScript 9,579 MIT 1,706 0 234 Updated Mar 10, 2026
  • qdk Public

    Microsoft Quantum Development Kit, including the Q# programming language, resource estimator, and Quantum Katas

    microsoft/qdk’s past year of commit activity
    Rust 877 MIT 170 139 (1 issue needs help) 13 Updated Mar 10, 2026
  • azure-pipelines-tasks Public

    Tasks for Azure Pipelines

    microsoft/azure-pipelines-tasks’s past year of commit activity
    TypeScript 3,622 MIT 2,691 278 (23 issues need help) 250 Updated Mar 10, 2026
  • fluentui Public

    Fluent UI web represents a collection of utilities, React components, and web components for building web applications.

    microsoft/fluentui’s past year of commit activity
    TypeScript 19,871 2,868 393 (6 issues need help) 277 Updated Mar 10, 2026
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