Scenery is an HTML5 scene graph.

A library for creating, manipulating and displaying 2D shapes in JavaScript.

A math library with a focus on mutable and immutable linear algebra for 2D and 3D applications.

Tools for developing and building PhET interactive simulations.

Axon provides powerful and concise models for interactive simulations, based on observable Properties and related patterns.

Experimental rasterization engine, by PhET Interactive Simulations

Core utilities used by all PhET simulations.

Third-party libraries and dependencies for PhET Simulations

Joist is the main framework for PhET Interactive Simulations. Joist creates and displays the simulation content, home screen, navigation bar, About dialog, enables switching between tabs, and other framework-related features.

Reusable components based on Scenery that are specific to PhET simulations.

Maintenance tools that won't change with different versions of chipper checked out

User-interface components for PhET simulations, built on top of Scenery.

Code that is common to all PhET simulations.

This repo contains the translated strings for PhET's simulations.

library containing code to support sonification of PhET simulations

Charting library built with Scenery

Simulation of Doppler Effect using SceneryStack

Minimal standalone assertion support for PhET libraries

Animation library for interactive HTML5 graphics

Assets and metadata for web apps built with phetsims/joist and related libraries.