Scene Graph.js
HTML5 Canvas and Animation Framework
Breathing Halftone
Images go whoa with lots of floaty dots
Gif.js
JavaScript GIF encoding library
Drawingboard.js
A canvas based drawing app that you can integrate easily on your website.
Comic.js
Cartoon style drawing for HTML5 Canvas & Raphael.js & D3.js & SVG.js
FloraJS
FloraJS is a JavaScript framework for simulating natural systems in a web browser.
Soc.js
An easier way to create social icons
Im.js
Image Match - Project to allow compare different images pixel by pixel with good performance
Cropper
A simple jQuery image cropping plugin.
Kinetic Js
KineticJS is an HTML5 Canvas JavaScript library that extends the 2D context by enabling canvas interactivity for desktop and mobile applications.
Konva
Konva.js is an HTML5 Canvas JavaScript framework that extends the 2d context by enabling canvas interactivity for desktop and mobile applications.
Joint
JavaScript diagramming library
Img to Ascii
A JavaScript implementation of a image to Ascii code
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.
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.
Isomer
Simple isometric graphics library for HTML5 canvas
Html2canvas
Screenshots with JavaScript