If you are interested in network visualization you might consider Cytoscape.js. It's being used e.g. in bioinformatics (visualizing networks of interacting gene

If you are interested in network visualization you might consider Cytoscape.js. It's being used e.g. in bioinformatics (visualizing networks of interacting genes, interactively inspecting & manipulating their layout etc). Open-source license, and seems to be becoming quite featureful: http://js.cytoscape.org/ http://js.cytoscape.org/