Open Source Native Browser Graphical Simulations: Interesting Links

Rendering

SceneJS

Javascript scene graph

GLGE

Relatively full featured. Shadows.

CubicVR

Partial port of the CubicVR engine to WebGL

Shader Toy

Variety of artsy but impressive shaders. Note the in-browser customization capability.

Physics

bulletjs

Hand-translated (I think) subset of Java Bullet.

ammo.js

Automated (and probably fuller) translation of Bullet to JavaScript

JSBullet

Another Bullet translation. No activity for a while.

Integrative Demo

Wloom

Game tech demo by author of bulletjs. Notice: sound, fog, skeleton-based figure animation, particles, polycount, framerate