I just learned about TUZZit from Carla Arena.
It’s a free online graphic organizer tool that provides lots of different options of organizers (you can also create your own); lets you paste online images videos, virtual post-it notes and more onto them; and then you can share your creation with online collaborators. In some ways it seems like an Exploratree on steriods (that site is on Not “The Best,” But “A List” Of Mindmapping, Flow Chart Tools, & Graphic Organizers list).
In other ways, it reminds me of tools on The Best Online Virtual “Corkboards” (or “Bulletin Boards”) list.
So, I’m going to add TUZZit to both of those lists, even though it was a little “buggy” when I was trying it out.