Nutch links visualization

Hello,

I am interested to build a links visualization chart for my site via nutch.

I used nutch to crawl the site starting from home page and have a few segments in the segments folder.

Now I need to create a UI which shows the traversal path starting from home page that was executed by nutch with inbound and outbound links per page.

Is there any such tool already available that I can reuse.

If not, any pointers on how I should query the linkdb?

Thanks

JPK