D3’s emphasis on web standards gives you the full capabilities of modern browsers without tying yourself to a proprietary framework, combining powerful visualization components and a data-driven approach to DOM manipulation.
Flot Animator is a jQuery plugin that will add smooth or gradual animations to your Flot charts, Flot Animator will allow you to highlight and draw attention to some charts and/or series by easily adding animation to your existing charts.
Morris.js is the library that powers the time-series graphs. It's a very simple API for drawing line, bar, area and donut charts.
Nice tutorial from Smashing Magazine about "Creating an Animated bar Graph with CSS And jQuery".
What this tutorial is making?
Works with Internet Explorer 6+, Chrome, Firefox 2+, Safari 3+ and Opera 9.5+
Arbor is a graph visualization library built with web workers and jQuery. Rather than trying to be an all-encompassing framework, arbor provides an efficient, force-directed layout algorithm plus abstractions for graph organization and screen refresh handling.
jqBarGraph is jQuery plugin that gives you freedom to easily display your data as graphs. There are three types of graphs: simple, multi and stacked. All you have to do is to pass your data to this plugin.
There are a lot of settings to tune appearance of your graph, as are animation, color scheme, dimensions etc. Also, you can additionally change look and feel of graph via CSS.
jQuery Gantt Chart is a simple chart that implements gantt functionality as a jQuery plugin. Plugin uses AJAX to retrive JSON data and render them as Gantt chart with many features such as zooming or paging.