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Right now, open communities are building amazing software together, and there are excellent "good first issue" opportunities, if you're looking to get involved.

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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 45.1k

  2. TypeScript TypeScript Public

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

    Go 111k 16.5k

  3. PowerToys PowerToys Public

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

    C 139k 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 8354 repositories
  • azurelinux Public

    General purpose Linux OS for Azure

    microsoft/azurelinux's past year of commit activity
    Python 5,350 MIT 708 23 197 Updated Oct 11, 2026
  • MIDI Public

    Windows MIDI Services

    microsoft/MIDI's past year of commit activity
    C++ 691 MIT 75 55 (1 issue needs help) 0 Updated Oct 11, 2026
  • CsWinRT Public

    C# language projection for the Windows Runtime

    microsoft/CsWinRT's past year of commit activity
    C# 666 MIT 135 235 14 Updated Oct 11, 2026
  • mimalloc Public

    mimalloc is a compact general purpose allocator with excellent performance.

    microsoft/mimalloc's past year of commit activity
    C 13,446 MIT 1,192 241 42 Updated Oct 11, 2026
  • amplifier-unified Public

    Unified shell for the Amplifier project

    microsoft/amplifier-unified's past year of commit activity
    Python 2 MIT 2 15 4 Updated Oct 11, 2026
  • duroxide-pg Public
    microsoft/duroxide-pg's past year of commit activity
    Rust 45 MIT 25 9 6 Updated Oct 11, 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 4,603 MIT 946 85 (15 issues need help) 68 Updated Oct 11, 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 612 MIT 257 249 (27 issues need help) 55 Updated Oct 11, 2026
  • litebox Public

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

    microsoft/litebox's past year of commit activity
    Rust 3,090 MIT 162 129 31 Updated Oct 11, 2026
  • winget-pkgs Public

    The Microsoft community Windows Package Manager manifest repository

    microsoft/winget-pkgs's past year of commit activity
    11,161 MIT 10,556 1,380 2,920 Updated Oct 11, 2026