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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 194k 44.9k

  2. TypeScript TypeScript Public

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

    Go 112k 16.1k

  3. PowerToys PowerToys Public

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

    C 140k 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# 28.7k 4.8k

Repositories

Showing 10 of 8416 repositories
  • mcscatblog Public
    microsoft/mcscatblog's past year of commit activity
    HTML 20 MIT 19 33 27 Updated Oct 31, 2026
  • TypeAgent Public

    Sample code that explores an architecture for using language models to build a personal agent that can work with application agents.

    microsoft/TypeAgent's past year of commit activity
    TypeScript 750 MIT 108 18 21 Updated Oct 31, 2026
  • aspire Public

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

    microsoft/aspire's past year of commit activity
    C# 6,391 MIT 1,029 2,465 (2 issues need help) 406 Updated Oct 31, 2026
  • nvx Public

    Cross-Platform Micro-VM Sandbox for Agentic Workloads

    microsoft/nvx's past year of commit activity
    Rust 803 MIT 50 65 2 Updated Oct 31, 2026
  • onnxruntime Public

    ONNX Runtime: cross-platform, high performance ML inferencing and training accelerator

    microsoft/onnxruntime's past year of commit activity
    C++ 22,200 MIT 4,392 915 954 Updated Oct 31, 2026
  • openvmm Public

    Home of OpenVMM and OpenHCL

    microsoft/openvmm's past year of commit activity
    Rust 1,955 MIT 262 190 (6 issues need help) 183 Updated Oct 31, 2026
  • amplifier-unified Public

    Unified shell for the Amplifier project

    microsoft/amplifier-unified's past year of commit activity
    Python 5 MIT 4 82 19 Updated Oct 31, 2026
  • AI-Engineering-Coach Public

    better agentic engineering

    microsoft/AI-Engineering-Coach's past year of commit activity
    TypeScript 4,357 MIT 608 40 30 Updated Oct 31, 2026
  • aspire.dev Public

    The official website for all things aspire.dev.

    microsoft/aspire.dev's past year of commit activity
    MDX 200 MIT 96 67 133 Updated Oct 31, 2026
  • sarif-js-sdk Public

    JavaScript code and supporting files for working with the 'Static Analysis Results Interchange Format' (SARIF, see https://github.com/oasis-tcs/sarif-spec)

    microsoft/sarif-js-sdk's past year of commit activity
    JavaScript 34 MIT 15 10 4 Updated Oct 31, 2026
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