There isn't really anything Nim specific that would apply for a host. In
general for something like Wordpress you need a machine with PHP installed (and
preferably updated and configured reasonably well). Nim can run pretty much
anywhere, although for a web service I would recommend something with an
internet connection. The playground runs on a Digital Ocean droplet, and I
assume some of the other pages does as well. Another similar host would be
Linode or Hetzner. But you could conceivably even write Nim services that runs
on an ESP8266 glued to the underside of a table at your local Starbucks
(although I doubt you'll be able to get a static IP which might makes thing a
bit tricky).