Dagre
Directed graph renderer for javascript
Fabric.js
Javascript Canvas Library, SVG-to-Canvas (and canvas-to-SVG) Parser
Go Js
All GoJS samples, extensions, and documentation
Maker.js
📐⚙ Library for creating 2D vector drawings for CNC and laser cutter machines.
Graphicsjs
A lightweight JavaScript graphics library with the intuitive API, based on SVG/VML technology.
Svg.js
A lightweight library for manipulating and animating SVG
Paper.js
The Swiss Army Knife of Vector Graphics Scripting – Scriptographer ported to JavaScript and the browser, using HTML5 Canvas. Created by @juerglehni & @jonathanpuckey
Chartist Js
Simple responsive charts
Js Barcode
Barcode generation library that works in both the browser and on Node.js http://lindell.me/JsBarcode
Gif.js
JavaScript GIF encoding library
Color
JavaScript color conversion and manipulation library
Comic.js
Cartoon style drawing for HTML5 Canvas & Raphael.js & D3.js & SVG.js
Liquidfun
2D physics engine for games
Image Mapster
jQuery plugin for enhancing HTML Image maps
Proton
A particle engine for html5
Two.js
A renderer agnostic two-dimensional drawing api for the web.
W Paint
jQuery Paint Plugin