P2.js
JavaScript 2D physics library
Scene Graph.js
HTML5 Canvas and Animation Framework
Lightslider
JQuery lightSlider is a lightweight responsive Content slider with carousel thumbnails navigation
Breathing Halftone
Images go whoa with lots of floaty dots
Ejecta
A Fast, Open Source JavaScript, Canvas & Audio Implementation for iOS
Ocanvas
JavaScript library for object-based canvas drawing.
Lightgallery.js
Full featured javascript lightbox gallery. No dependencies.
Processing.js
A port of the Processing visualization language to JavaScript.
Croppie
A Javascript Image Cropper
Photon
CSS 3D Lighting Engine
Lity
Lightweight responsive lightbox.
FloraJS
FloraJS is a JavaScript framework for simulating natural systems in a web browser.
Bonsai
BonsaiJS is a graphics library and renderer
P5.js
A JS client-side library for creating graphic and interactive experiences, based on the core principles of Processing. http://twitter.com/p5xjs —
Easel JS
The Easel Javascript library provides a full, hierarchical display list, a core interaction model, and helper classes to make working with the HTML5 Canvas element much easier.
Unveil
A very lightweight jQuery plugin to lazy load images
Swipebox
A touchable jQuery lightbox