Dagre
Directed graph renderer for javascript
Paper.js
The Swiss Army Knife of Vector Graphics Scripting – Scriptographer ported to JavaScript and the browser, using HTML5 Canvas. Created by @juerglehni & @jonathanpuckey
Color
JavaScript color conversion and manipulation library
Konva
Konva.js is an HTML5 Canvas JavaScript framework that extends the 2d context by enabling canvas interactivity for desktop and mobile applications.
Pixastic
JavaScript Image Processing Library
Proton
A particle engine for html5
Caman Js
Pure Javascript HTML5 (Ca)nvas (Man)ipulation
P2.js
JavaScript 2D physics library
Js Barcode
Barcode generation library that works in both the browser and on Node.js http://lindell.me/JsBarcode
Two.js
A renderer agnostic two-dimensional drawing api for the web.
Canvg
Javascript SVG parser and renderer on Canvas
FloraJS
FloraJS is a JavaScript framework for simulating natural systems in a web browser.
Gif.js
JavaScript GIF encoding library
Chartist Js
Simple responsive charts
Maker.js
📐⚙ Library for creating 2D vector drawings for CNC and laser cutter machines.
Croppie
A Javascript Image Cropper
Rimg
A responsive image solution for browsers that support mediaqueries. Pure javascript and no server-side code.