NVD3: This project is an attempt to build re-usable charts and chart components for d3.js without taking away the power that d3.js gives you.
Tutorial: Introduction to D3: Basically we just plot hidden circles randomly on the screen, and then transition them to a portion of the screen. Then we add some interaction to it so that the circles will move once you move your mouse over them.
Easy Pie Chart: Easy pie chart is a jQuery plugin that uses the canvas element to render simple pie charts for single values
Google Chart Tools: The Google Visualization API allows you to create charts and reporting applications over structured data and helps integrate these directly into your website.
Paper.js: Paper.js offers a clean Scene Graph / Document Object Model and a lot of powerful functionality to create and work with vector graphics and bezier curves.
Processing.js: Processing.js is the sister project of the popular Processing visual programming language, designed for the web. Processing.js makes your data visualizations work using web standards.
TimelineJS: TimelineJS is an open-source tool that enables anyone to build visually rich, interactive timelines.
Treefun by Jim Blackler: This tool creates SVG (Standard Vector Graphics) files to illustrate information structured as a basic tree.
jQuery.Gantt: Draw Gantt charts with the famous jQuery ease of development.
morris.js: Morris.js is a very simple API for drawing line, bar, area and donut charts.
vis.js: Vis.js is a dynamic, browser based visualization library. The library is designed to be easy to use, handle large amounts of dynamic data, and enable manipulation of the data.