For my Master Thesis I’m evaluating several interesting frameworks to visualize Big Data in the browser. Next to the fantastic D3.js I found WebGL quite helpful even if it is not as far developed as its 2D predecessors. Nevertheless, Google shows some impressive examples of what is possible with WebGL on their site chrome-Experiments.com. To give you a first impression on what can be done with those examples I want to show a screenshot I took that visualizes German students who study in a foreign country.
Source code is not more than ~50 lines so that it can be adapted to your personal needs easily.