Isomer
Simple isometric graphics library for HTML5 canvas
Paper.js
The Swiss Army Knife of Vector Graphics Scripting – Scriptographer ported to JavaScript and the browser, using HTML5 Canvas. Created by @juerglehni & @jonathanpuckey
Processing.js
A port of the Processing visualization language to JavaScript.
Joint
JavaScript diagramming library
jQuery QR Code
qrcode generation standalone (doesn't depend on external services)
Kinetic Js
KineticJS is an HTML5 Canvas JavaScript library that extends the 2D context by enabling canvas interactivity for desktop and mobile applications.
Raphael
JavaScript Vector Library
Croppie
A Javascript Image Cropper
Svg.js
A lightweight library for manipulating and animating SVG
Bonsai
BonsaiJS is a graphics library and renderer
Snap.svg
The JavaScript library for modern SVG graphics.
jQuery Focuspoint
jQuery plugin for 'responsive cropping'. Dynamically crop images to fill available space without cutting out the image's subject. Great for full-screen images.
Clmtrackr
Javascript library for precise tracking of facial features via Constrained Local Models
Proton
A particle engine for html5
Graphicsjs
A lightweight JavaScript graphics library with the intuitive API, based on SVG/VML technology.
Image Mapster
jQuery plugin for enhancing HTML Image maps
Canvg
Javascript SVG parser and renderer on Canvas