Word Webs

According to their website, it is "Brainstorming made fun."  Just like making up a mindmap but it lists related or associated words to the one you submit.  Attached to each word or node will be 6 associated words.  You can branch off from any of these words.  To see the website click here.

Mind Maps by Bubbl.us

There are many mind mapping sites out there.  I  have posted many times about them.  You can find other ones by clicking here.  Bubbl.us is very simple.  To add  bubbles  just click on the plus sign and you will get another bubble.  To see the site click here.