mo.js is a powerful motion graphics library for the web.
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.
ECharts is a comprehensive charting library offering a painless way of adding interactive charts to your products.
ECharts currently supports line, column, scatter, pie, radar, candlestick, chord, gauge, funnel, map and force-directed chart types, many of these can be combined in one chart.
MetricsGraphics.js is a library optimized for visualizing and laying out time-series data. It provides a simple way to produce common types of graphics in a principled, consistent and responsive way.
The library currently supports line charts, scatterplots and histograms as well as features like rug plots and basic linear regression.
A JS client-side library for creating graphic and interactive experiences, based on the core principles of Processing
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+