Originally posted by Thomas Paul: It's commercial software from infopop.com. If you want a bulletin board that is very similar and is free, try http://www.phpbb.com
You might even try INVisionBoard. I just upgraded my PHPBB to IVision and there are so many more features. And it is free as long as you don't need support. Go to http://forums2.embeddedthought.com to see them on my site. If you want to compare them to PHPBB, go to the forums link in my sig. I haven't actually made the IVision one production yet as I am still tweaking settings. (Sooooo many settings, ) Good luck and let me know if you need any help.