Piktochart is great for designing infographics that require detailed information to be presented in a visually pleasing way. The fact that infographics are automatically split into segments, or 'blocks' helps with designing professional looking content quickly. There is also a wide range of templates that can be used so there's no need to start from scratch.
Powtoon is a very capable suite of tools that help a developer create training videos that look way better than they should. I've used it to create fun, attention-getting commercials for new topics, I've used it to enhance what would otherwise be boring step-by-step tutorials, and I've used it to create all manner of "Explainer videos" for all kinds of topics - this is where it EXCELS! In my opinion, its biggest limitations are limits on imported video (max of 90 seconds), which mean that you have to do a lot of extra work to break up and import anything of substantive length. And because it presents your personal library of imported images and audio ONLY sequentially, it's VERY LIMITED in the re-usability of those assets - it's way faster to just import a new instance of an image and audio than to try to find it in your library.
I have never needed the support feature. As I mentioned, everything was intuitive to me however I have taught myself Adobe, Final Cut and iMovie so most of these programs became intuitive.
Piktochart is cheaper than Canva, and better for building long-form infographics that require a large amount of data to be presented visually. It is also much easier to learn for new team members than Pixlr
Powtoon has the advantage over traditional video editing software in terms of the library of characters and elements that can be easily dragged and dropped onto the canvas. Powtoon is easier to use and has a more intuitive user interface than Vyond.
