Block-based coding with tons of capabilities

    Built on top of Scratch.

    Try it out
    GitHub Credits Extensions Desktop Docs Scratch 2 Packager

    What's new?

    CattyMod has improved loading extensions from URLs!

    CattyNews

    You can now Expand Settings!

    Click Expand in the Settings menu.

    Discover CattyMod

    🚀

    Hello, Scratch!

    Easily load your projects in seconds. Just paste any Scratch link directly into the editor homepage, or swap scratch.mit.edu in your project link with cattymod.app!

    🧩

    More Extensions!

    Access an expanded library of capabilities. Enjoy seamless support for standard Scratch extensions, TurboWarp extensions, and new CattyMod ones.

    🎨

    Customize it!

    Make the workspace truly yours. Pick between accent colors, toggle dark mode, and activate built-in Addons to make it truly yours.

    Blocks illustration

    CattyMod

    CattyMod is not affiliated with Scratch, the Scratch Team, the Scratch Foundation, or any Scratch mods.
    Scratch is a project of the Scratch Foundation. It is available for free at https://scratch.org/.