Ah… that clarifies a lot.
I should stress again that I’m not that familiar with GitBook, and I’m not completely sure how it works or what it can do. So take what I write with a grain of salt.
You should understand though that GitBook and our hosting are completely different services. GitBook is essentially a managed website builder. But instead of doing everything through their interface with a drag-and-drop editor (like you’d see with Site.Pro), the content itself is fetched from a Git repository.
Our hosting does not really give you website building software. It gives you the space to choose and setup your own website building software. Some publish a static site, some use our website builder, some use software like WordPress and some build a completely custom site from scratch.
Most of the features offered by GitBook are not features you’ll find with us, or any other “web hosting” service for that matter. Localization, authentication and analytics integration are features that must be offered by your website building software.
So whether you can replicate your GitBook setup here depends on the features you need and the software you will use.
When it comes to publishing documentation, my first guess would be something like MkDocs, which just turns markdown files into pretty HTML content. You could run those in a CI pipeline to build the website and push it to your hosting account over FTP. What your website looks like then is configured entirely in your code, but you won’t have any features like authentication because it’s all static HTML.
For something more advanced, I’ve heard good things about BookStack, which is like a CMS for documentation. But I’m not sure how close it is in functionality to GitBook.
WordPress also has plugins for basically anything you can imagine, so I’m sure that you could build a documentation site with WordPress too.
Regardless, it doesn’t really matter which hosting plans you use. Free hosting, premium hosting and business hosting are ultimately all web hosting, which is not as purpose built or locked down as something like GitBook, which has a much more narrow use case.