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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 16k

  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 8405 repositories
  • go-otel-audit Public

    Client for sending audit events

    microsoft/go-otel-audit's past year of commit activity
    Go 11 8 3 3 Updated Oct 28, 2026
  • aspire-skills Public

    Official Aspire skills and plugins for AI coding agents to initialize, wire, orchestrate, monitor, and deploy distributed apps.

    microsoft/aspire-skills's past year of commit activity
    JavaScript 92 MIT 12 18 18 Updated Oct 28, 2026
  • nvx Public

    Cross-Platform Micro-VM Sandbox for Agentic Workloads

    microsoft/nvx's past year of commit activity
    Rust 787 MIT 50 109 (3 issues need help) 19 Updated Oct 28, 2026
  • onnxruntime Public

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

    microsoft/onnxruntime's past year of commit activity
    C++ 22,183 MIT 4,377 921 929 Updated Oct 28, 2026
  • syntheseus Public

    Package for Retrosynthetic Planning

    microsoft/syntheseus's past year of commit activity
    Python 213 MIT 40 7 (1 issue needs help) 0 Updated Oct 28, 2026
  • microsoft-ui-xaml Public

    WinUI: a modern UI framework with a rich set of controls and styles to build dynamic and high-performing Windows applications.

    microsoft/microsoft-ui-xaml's past year of commit activity
    C++ 8,563 MIT 961 2,233 (17 issues need help) 258 Updated Oct 28, 2026
  • finops-toolkit Public

    Tools and resources to help you adopt and implement FinOps capabilities that automate and extend the Microsoft Cloud.

    microsoft/finops-toolkit's past year of commit activity
    PowerShell 617 MIT 266 259 (27 issues need help) 53 Updated Oct 28, 2026
  • PyRIT Public

    The Python Risk Identification Tool for generative AI (PyRIT) is an open source framework built to empower security professionals and engineers to proactively identify risks in generative AI systems.

    microsoft/PyRIT's past year of commit activity
    Python 4,706 MIT 987 85 (13 issues need help) 62 Updated Oct 28, 2026
  • go-images Public

    Docker image packaging and publishing for the Microsoft build of Go

    microsoft/go-images's past year of commit activity
    PowerShell 22 BSD-3-Clause 12 0 1 Updated Oct 28, 2026
  • 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 432 BSD-3-Clause 46 75 9 Updated Oct 28, 2026
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