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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 45.6k

  2. TypeScript TypeScript Public

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

    Go 112k 16.8k

  3. PowerToys PowerToys Public

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

    C 140k 8.6k

  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 8396 repositories
  • react-native-winrt Public

    Windows Runtime projection for React Native for Windows

    microsoft/react-native-winrt's past year of commit activity
    C++ 99 MIT 11 38 (1 issue needs help) 7 Updated Oct 23, 2026
  • fast Public

    The adaptive interface system for modern web experiences.

    microsoft/fast's past year of commit activity
    TypeScript 9,679 639 78 12 Updated Oct 23, 2026
  • nvx Public

    Cross-Platform Micro-VM Sandbox for Agentic Workloads

    microsoft/nvx's past year of commit activity
    Rust 732 MIT 47 88 (7 issues need help) 19 Updated Oct 23, 2026
  • scitt-ccf-ledger Public

    Supply Chain Integrity Transparency and Trust ledger application using Confidential Consortium Framework (CCF)

    microsoft/scitt-ccf-ledger's past year of commit activity
    Python 50 MIT 31 9 5 Updated Oct 23, 2026
  • kiota-samples Public

    sample generation SDKs for Kiota

    microsoft/kiota-samples's past year of commit activity
    Go 116 MIT 39 9 46 Updated Oct 23, 2026
  • finnts Public

    Microsoft Finance Time Series Forecasting Framework (FinnTS) is a forecasting package that utilizes cutting-edge time series forecasting and parallelization on the cloud to produce accurate forecasts for financial data.

    microsoft/finnts's past year of commit activity
    R 278 54 8 4 Updated Oct 23, 2026
  • litebox Public

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

    microsoft/litebox's past year of commit activity
    Rust 3,206 MIT 180 125 26 Updated Oct 23, 2026
  • BotFramework-WebChat Public

    A highly-customizable web-based client for Azure Bot Services.

    microsoft/BotFramework-WebChat's past year of commit activity
    HTML 1,784 MIT 1,601 380 49 Updated Oct 23, 2026
  • onnxruntime-genai Public

    Generative AI with ONNX Runtime

    microsoft/onnxruntime-genai's past year of commit activity
    C++ 1,143 MIT 371 156 117 Updated Oct 23, 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 4,673 MIT 976 81 (14 issues need help) 57 Updated Oct 23, 2026
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