D3 is a great product. We really like using it. D3 has a great integration with svg rendering, but we needed a canvas rendering which resulted in a merge of vis

D3 is a great product. We really like using it. D3 has a great integration with svg rendering, but we needed a canvas rendering which resulted in a merge of vis.js (guys did a great job on canvas rendering) and D3 (just the simulator: d3-force).