Javascript
Every aspiring Web developer should know about the power of JavaScript and how it can be used to enhance the ways in which people see and interact with Web pages. Fortunately, to help us be more productive, we can use the power of JavaScript libraries, and in this article we will take a good look at jQuery in action. What Is jQuery?
50 jQuery Function Demos for Aspiring Web Developers - Smashing Coding
Source code: http://github.com/evanw/csg.js/ Documentation: http://evanw.github.com/csg.js/docs/ Introduction
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Some of us are already familiar with Node.js and for some others, it is probably "another new development tool/language/standard that is getting popular but what the heck..".
The Awesome Node.js And Its Gang
About
Paper.js — The Swiss Army Knife of Vector Graphics Scripting. Paper.js is an open source vector graphics scripting framework that runs on top of the HTML5 Canvas. It offers a clean Scene Graph / Document Object Model and a lot of powerful functionality to create and work with vector graphics and bezier curves, all neatly wrapped up in a well designed, consistent and clean programming interface.
JSColor is a simple and very easy-to-implement JavaScript library that transforms any given input into a color picker . The picker is a hidden layer, doesn't use any pop-ups and can be positioned on any side of the input field.
JSColor – A Flexible JavaScript Color Picker
Protovis composes custom views of data with simple marks such as bars and dots . Unlike low-level graphics libraries that quickly become tedious for visualization, Protovis defines marks through dynamic properties that encode data, allowing inheritance , scales and layouts to simplify construction.