I need to visualise a directed graph that represents the flow of data in a web application. Can anyone recommend any JavaScript or Flash solutions for this please. It must support hooking a node click event because I need to fire off an AJAX call when this happens. Can be free or commercial. The server-side technology is Java if this makes any difference.
The JProbe Call Graph is the sort of thing I have in mind:
(source: javaworld.com)
Thanks!