I tried this out (July 2022) and unfortunately, pow.cx no longer exists.
If you would like to use a "real" domain name in order to visit your Rails sites on your development environment, you can just use something like http://lvh.me:3000 - lvh.me directs to the IP address 127.0.0.1 (your localhost). The advantages of this are
it accepts subdomains (so http://customer1.lvh.me:3000 works just fine),
it doesn't require any configuration or software installation, and
Great first video. I never knew such a service existed. Thanks for sharing!
The last commit was in 2014, so it seems more or less dead. Also it was MacOS only.
Lately, I've been using Puma-dev
I tried this out (July 2022) and unfortunately, pow.cx no longer exists.
If you would like to use a "real" domain name in order to visit your Rails sites on your development environment, you can just use something like http://lvh.me:3000 - lvh.me directs to the IP address 127.0.0.1 (your localhost). The advantages of this are
Unfortunately, this isn't a solution for situations where you want to reach your development computer from your tablet or smartphone.
HTH