Django and interactive graph/network visualization

I did something similar using PyGraphviz. You can save the graph as SVG and show the SVG in your website. Then you can use something like jQuery SVG to attach handlers to the nodes.

I implemented a more flexible solution and serialized all nodes and edges to a JSON format and sent it to the website. Then I draw the graph using Raphaël. This solution is cross-browser compatible and very flexible.

Checkout also django-netjsongraph.