I gone through a lot of hosting service providers and unfortunetly cannot find a single one that can be used without running nonfree programs, all of them require loading bulky obfuscated JavaScript apps.
I know of Codeberg Pages for static sites for example, but it is not suitable for any business or professional use.
You can use Ansible to create domain names and register URLs on most popular hosting providers/registrars.
You shouldn’t avoid platforms just because they have non-free websites, that’s extreme bro.
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I don’t think you know what you mean/want. I never had any registrar requiring me to install anything to have my domain registered with them. The same is true about hosters too.
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