magazine

"The main focus of CamanJS is manipulating images using the HTML5 canvas and Javascript. It's a combination of a simple-to-use interface with advanced and efficient image/canvas editing techniques. It is also completely library independent and can be safely used next to jQuery, YUI, Scriptaculous, MooTools, etc."

WebP

Skeltrack is a Free and Open Source Software library for tracking the human skeleton joints from depth images. It is implemented with GLib and uses plain mathematics to detect the human skeleton and although it does not use any database, it was inspired by Andreas Baak's paper: A Data-Driven Approach for Real-Time Full Body Pose Reconstruction from a Depth Camera

does the seam carving algorithm from Slashdot a few years ago

"Typed Arrays can significantly increase the pixel manipulation performance of your HTML5 2D canvas Web apps. This is of particular importance to developers looking to use HTML5 for making browser-based games."