By website builder you can mean:
The first includes such systems as WordPress, Joomla !, OpenCart, etc. Such systems are supported on our hosting. They can be installed both manually and in automatic mode1)... Detailed instructions for various CMS can be found in here.
The latter include services like Wix. Such functionality is not provided on the hosting, but through us you can register domain, which can be connected to a site hosted on such a service.