Epoch is a general purpose real-time charting library for building beautiful, smooth, and high performance visualizations.
It focuses on two different aspects of visualization programming: basic charts for creating historical reports, and real-time charts for displaying frequently updating timeseries data
Cytoscape.js is an open-source graph library written in JavaScript. You can use Cytoscape.js for graph analysis and visualisation. It's compatible with CommonJS/Node.js, jQuery 1.4+, and plain JavaScript.
D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG and CSS.
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.
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.