P5.js
A JS client-side library for creating graphic and interactive experiences, based on the core principles of Processing. http://twitter.com/p5xjs —
Im.js
Image Match - Project to allow compare different images pixel by pixel with good performance
Vintage JS
vintageJS - add a retro/vintage effect to images using the HTML5 canvas element
Ocanvas
JavaScript library for object-based canvas drawing.
Soc.js
An easier way to create social icons
jCanvas
A jQuery plugin that makes the HTML5 canvas easy to work with.
Easel JS
The Easel Javascript library provides a full, hierarchical display list, a core interaction model, and helper classes to make working with the HTML5 Canvas element much easier.
FloraJS
FloraJS is a JavaScript framework for simulating natural systems in a web browser.
Rimg
A responsive image solution for browsers that support mediaqueries. Pure javascript and no server-side code.
Paper.js
The Swiss Army Knife of Vector Graphics Scripting – Scriptographer ported to JavaScript and the browser, using HTML5 Canvas. Created by @juerglehni & @jonathanpuckey
Joint
JavaScript diagramming library
Noisy
A jQuery plugin that adds random noise to the background of a given element.
Focal Point
A small set of CSS classnames to help keep images cropped on the focal point for responsive designs. Using only HTML/CSS, web authors can specify an image's focal point, which stays as the image's primary focus, while the image's available width changes on responsive webpages. Crop and re-size images depending on available width and let CSS to do all of the work, and without any JavaScript.
jQuery Focuspoint
jQuery plugin for 'responsive cropping'. Dynamically crop images to fill available space without cutting out the image's subject. Great for full-screen images.
Html2canvas
Screenshots with JavaScript
Snap.svg
The JavaScript library for modern SVG graphics.
jQuery QR Code
qrcode generation standalone (doesn't depend on external services)