Carrd is best for simple one-page websites. It combines an easy learning curve with high customization. It's perfect for testing out an idea.

Another great option for this use-case is Umso.

You can also use tools like Webflow and Squarespace, but for simple sites those tools may be overkill.

Gumroad is the best option for selling digital products online.

For selling physical products, Gumroad is a great simple option, but if you want a scalable e-commerce solution for physical products I'd recommend Shopify.

Squarespace and Webflow also have e-commerce functionality, but it’s more limited than Shopify.