The "useful for old hardware" part has proven itself to me.
I built a system known as HelioMine that lets users mine crypto for a nonprofit free web hosting company as an alternative to PayPal donations. They have lots of international users, and many are in fact using ancient PCs. I see laptops with old GeForce cards, 10 year old Core2s, you name it...and they're productive. That company still isn't in the black, but those old PCs definitely help bring it closer.
Aeon (and more recently TRTL after Aeon had ASIC issues) is the whole reason the program worked. :D Aeon's lightweight CN-Lite algorithm made it possible.
I had it mining other regular CN things like ETN, but there were just too many PCs that couldn't produce usable hash rates.
EDIT: I got a PM asking about this app. It's this one: https://www.heliohost.org/heliomine/ (Which itself is a branded version of a system I built called RGS, originally intended as installer bundleware but now mostly used by business clients of mine to monetize their PCs after hours).
Uuh, as far as I can find freenom does not host. They are just a DNS resolver. You can only get a domain name there.
Keep in mind, hosting is almost never free..
Edit: You can try https://www.heliohost.org/ for free hosting.