Ryan,
I have a descriptive list of the widgets and some blog posts about them, but for version 6. The widgets list has not changed, some of them were adapted to be functional as well in HTML5-output and they ended up with the new interactions. But their functionality is the same as when you insert them as widget. Maybe you'll find a little bit of information here: http://blog.lilybiri.com/widgets-in-captivate-list
Lilybiri
