Scene Graph.js
HTML5 Canvas and Animation Framework
P5.js
A JS client-side library for creating graphic and interactive experiences, based on the core principles of Processing. http://twitter.com/p5xjs —
Liquidfun
2D physics engine for games
Obelisk.js
JavaScript Engine for Building Isometric Pixel Element with HTML5 Canvas
Comic.js
Cartoon style drawing for HTML5 Canvas & Raphael.js & D3.js & SVG.js
Rimg
A responsive image solution for browsers that support mediaqueries. Pure javascript and no server-side code.
Im.js
Image Match - Project to allow compare different images pixel by pixel with good performance
Soc.js
An easier way to create social icons
Ocanvas
JavaScript library for object-based canvas drawing.
Cropper
A simple jQuery image cropping plugin.
Gif.js
JavaScript GIF encoding library
Drawingboard.js
A canvas based drawing app that you can integrate easily on your website.
Konva
Konva.js is an HTML5 Canvas JavaScript framework that extends the 2d context by enabling canvas interactivity for desktop and mobile applications.
Html2canvas
Screenshots with JavaScript
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.
Img to Ascii
A JavaScript implementation of a image to Ascii code