Talk Less, Learn More, Explore.
For me, I prefer Powtoon, despite the annoying template at the end. The interface is easy, and there's a lot of free templates to choose from. As for GoAnimate, it's a fun experience to create your own animation, from the stick cartoons to anime template. What's interesting about this site is that you can make the character walk, talk (using your own audio or simply upload one, or record it on the spot!) and much more. Prezi's a good sample of 'mind-maps', as it uses that concept to relate one idea to another and you can zoom the ideas to get a better picture. I'm still adapting to Moovly and Wideo though, so not much I can say about these two, but with Moovly, you can create a doodle-like video, the ones like the trending Draw My Life videos made by YouTubers.
Well then, happy exploring!
[What. That's it?]