List of Free code Canvas API
Force.com Apex code analyser using the Tooling API and Canvas.
HTML5 Canvas API implementation of the AS3 BitmapData class.
A git mirror of svn hosted canto js (An Improved HTML5 Canvas API).
A composite shape/control API for the HTML 5 Canvas.
Microlibrary that makes it quick and easy to draw using the HTML5 Canvas API.
HTML5 Android Pattern LockScreen
A proof of concept of the Android Pattern LockScreen using the Canvas API (w/ Kinetic.js).
j Widget Canvas HTML5 canvas framework with API very similar to Flash.
A keyframe API for the HTML5 Canvas.
Paint board on HTML5 canvas (canvas, drag and drop, localstorage, js file API, AJAX ).