P5.js
A JS client-side library for creating graphic and interactive experiences, based on the core principles of Processing. http://twitter.com/p5xjs —
Ocanvas
JavaScript library for object-based canvas drawing.
Soc.js
An easier way to create social icons
J Query.black and White
Clientside grayscale images on any browser
Jcrop
Jcrop (official) - Image Cropping Plugin for jQuery
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
Cropper
A simple jQuery image cropping plugin.
Drawingboard.js
A canvas based drawing app that you can integrate easily on your website.
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.
Gif.js
JavaScript GIF encoding library
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.
Img to Ascii
A JavaScript implementation of a image to Ascii code
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.
Obelisk.js
JavaScript Engine for Building Isometric Pixel Element with HTML5 Canvas