Fabric.js
Javascript Canvas Library, SVG-to-Canvas (and canvas-to-SVG) Parser
Js Barcode
Barcode generation library that works in both the browser and on Node.js http://lindell.me/JsBarcode
Svgo
SVGO is a Nodejs-based tool for optimizing SVG vector graphics files.
Maker.js
📐⚙ Library for creating 2D vector drawings for CNC and laser cutter machines.
Proton
A particle engine for html5
Dagre
Directed graph renderer for javascript
Two.js
A renderer agnostic two-dimensional drawing api for the web.
P2.js
JavaScript 2D physics library
Pixastic
JavaScript Image Processing Library
Color
JavaScript color conversion and manipulation library
Canvg
Javascript SVG parser and renderer on Canvas
Gif.js
JavaScript GIF encoding library
Jcrop
Jcrop (official) - Image Cropping Plugin for jQuery
Image Mapster
jQuery plugin for enhancing HTML Image maps
Chartist Js
Simple responsive charts
Obelisk.js
JavaScript Engine for Building Isometric Pixel Element with HTML5 Canvas
Im.js
Image Match - Project to allow compare different images pixel by pixel with good performance