Sigma JS is a rendering engine specialized on drawing networks and graphs on web pages with a customizability that is unparalleled. It’s good for anyone looking for interactivity. The assortment of plugins is rather extensive and two formats for data are offered: GEXF and JSON. It renders on WebGL by default with an HTML5 Canvas fallback.
- Free to use
- Interactive graphs
- Sigma.JS isn’t completely straightforward to use.
- Can be a bit difficult to figure out at first.
There is no charge for Sigma.JS.