Hacker News Reader

For those wondering, I believe the visualizations on this page were created with OpenDX (http://opendx.org/) or its predecessor from IBM.

You can register by email to get a copy, but the link they sent me is dead (looks like the website doesn't exist anymore). Someone put up a copy at http://pagesperso-orange.fr/pierre.baldensperger/OpenDX-4.4....