Question: I'm looking for a free website builder that allows me to customize and see different variations of my site.

If you want a free website builder that lets you customize and experiment with different versions of your site, Essai is worth a look. It's a no-code, AI-assisted tool that lets you create a website by describing it. Essai comes with AI-augmented content and design, conversational UI editing and text-to-website generation, and is geared in particular for entrepreneurs who need to create and experiment with different landing page variations.

Butternut AI is another tool for creating and customizing websites. It lets you generate multipage sites from a single prompt and provides full control over elements, text and imagery. It's got built-in search engine optimization and web and mobile responsiveness, too, making it a good option for businesspeople and startups who want to create and experiment with different variations without having to hire a developer.

If you're a WordPress fan, ZipWP is another option. It lets you create professional-looking websites in minutes without writing any code. ZipWP offers unlimited customization options and is built on WordPress, which means you can tap into the vast ecosystem of plugins and themes for maximum flexibility and extensibility. It's good for web design pros and entrepreneurs who want a fast, easy way to create a professional online presence.