Image Mapster
jQuery plugin for enhancing HTML Image maps
Dagre
Directed graph renderer for javascript
Obelisk.js
JavaScript Engine for Building Isometric Pixel Element with HTML5 Canvas
Gif.js
JavaScript GIF encoding library
Fabric.js
Javascript Canvas Library, SVG-to-Canvas (and canvas-to-SVG) Parser
Go Js
All GoJS samples, extensions, and documentation
Color
JavaScript color conversion and manipulation library
Drawingboard.js
A canvas based drawing app that you can integrate easily on your website.
Ocanvas
JavaScript library for object-based canvas drawing.
Vintage JS
vintageJS - add a retro/vintage effect to images using the HTML5 canvas element
Joint
JavaScript diagramming library
Two.js
A renderer agnostic two-dimensional drawing api for the web.
jQuery QR Code
qrcode generation standalone (doesn't depend on external services)
Isomer
Simple isometric graphics library for HTML5 canvas
Processing.js
A port of the Processing visualization language to JavaScript.
Maker.js
📐⚙ Library for creating 2D vector drawings for CNC and laser cutter machines.
Jcrop
Jcrop (official) - Image Cropping Plugin for jQuery