Recommendations for visualising a directed graph in a Web UI

Answer 1

You can use birdeye RaVis on Flash. It's open source.

Answer 2

I like WireIt. It's written in JavaScript and is quite versatile. And open source (MIT License)

Answer 3

Try this one:

http://flare.prefuse.org/

Flare is an ActionScript library for creating visualizations that run in the Adobe Flash Player. From basic charts and graphs to complex interactive graphics, the toolkit supports data management, visual encoding, animation, and interaction techniques. Even better, flare features a modular design that lets developers create customized visualization techniques without having to reinvent the wheel.

Answer 4

Also give a try Google Visualisation API and especially Org Chart .