Jcrop (official) - Image Cropping Plugin for jQuery
vintageJS - add a retro/vintage effect to images using the HTML5 canvas element
Clientside grayscale images on any browser
A jQuery plugin that adds random noise to the background of a given element.
Cartoon style drawing for HTML5 Canvas & Raphael.js & D3.js & SVG.js
Images go whoa with lots of floaty dots
BonsaiJS is a graphics library and renderer
A simple jQuery image cropping plugin.