HTML5 : Some more libraries

While going good with at least one post each day, I am not sure what to put next for HTML5 Canvas.
I came across some more libraries for HTML5 Canvas.

KineticJS
Doodle.js
Image Manipulation on Canvas
pixastic
CamanJS
tiffus
JSDrawing
PaintbrushJS
Javascript Code Quality tool
JSLint
Javascript programming
Backbone
Underscore
Knockout
Sugar

phpjs
pdf.js
iScroll
zepto.js

node.js
CoffeeScript

We are going good with HTML5 Canvas, I hope there is nothing much left for the basic concepts except one or two, which we will be covering soon. Leave a comment if you feel any tutorial in particular to be included.
Stay tuned and thanks for being here.