The WhoIS we are talking about in the pricing page is the Gandi one. It is not available for every TLDs has some registries don't support it. Majors one does.
We do not earn money when you use the site. There is no subscription fee, no premium stuff. We take our cut when you buy a domain from Nuage and/or renew your domains. It is transparent, and just to make sure it is clear, we do buy our domains from Gandi which is accredited by ICANN.
API is on it's way but not ready yet. We are basically trying to create a standard for domain names. Also a lot ore is coming like instant landing pages, service integration ...
It's actually not a registrar, but a platform that aggregate registrars in a single UI. You basically sync your accounts from registrars (GoDaddy, Gandi, ...) and it let's you manage them from the same place.
One irritation that has popped up for me is that I was unable to combine my domain names into one registrar. I managed to move most of them over to Namecheap, but they won't accept transfers with a .ws TLD, so that one remains at register.com. I suppose in theory I could move to Nuages and manage everything from one account, but something tells me I'd just end up using all 3 and my situation would be slightly worse off than it is now.
Quick aside to tell that this comparison video was generated a long time ago, when stabilized video were saved at a lower resolution. Since then, we've increased the output resolution and fixed some color correction issues.
You're right that it might not be noticeable if they're not side by side. But it's still fuzzier. Maybe it makes a difference for your application and maybe not.
