Paper.js
The Swiss Army Knife of Vector Graphics Scripting – Scriptographer ported to JavaScript and the browser, using HTML5 Canvas. Created by @juerglehni & @jonathanpuckey
Soc.js
An easier way to create social icons
FloraJS
FloraJS is a JavaScript framework for simulating natural systems in a web browser.
Svg.js
A lightweight library for manipulating and animating SVG
Ocanvas
JavaScript library for object-based canvas drawing.
Bonsai
BonsaiJS is a graphics library and renderer
Canvg
Javascript SVG parser and renderer on Canvas
Mapmap.js
A data-driven API for interactive thematic maps
Clmtrackr
Javascript library for precise tracking of facial features via Constrained Local Models
Croppie
A Javascript Image Cropper
Image Mapster
jQuery plugin for enhancing HTML Image maps
Kinetic Js
KineticJS is an HTML5 Canvas JavaScript library that extends the 2D context by enabling canvas interactivity for desktop and mobile applications.
Img to Ascii
A JavaScript implementation of a image to Ascii code
W Paint
jQuery Paint Plugin
Jcrop
Jcrop (official) - Image Cropping Plugin for jQuery
Im.js
Image Match - Project to allow compare different images pixel by pixel with good performance
Cropper
A simple jQuery image cropping plugin.