Between those 2, I would go with WooCommerce. It’s a plugin on the WordPress platform, so you get more customizability and flexibility, and you get to host your website on the server of your choice, unlike Shopify. But you get more built-in features with Shopify.
But if choosing among all e-commerce platforms, I would choose UltimateWB. You get the most built-in features with it, and lots of customizability and flexibility. You can add your own coding to it if you want, but you probably won’t need to because it has so many built-in features. And like WordPress, you can download it and host your website on your own server if you want. Or you can choose a web hosting plan there, and you get free software install service.
Got a techy/website question? Whether it’s about UltimateWB or another website builder, web hosting, or other aspects of websites, just send in your question in the “Ask David!” form. We will email you when the answer is posted on the UltimateWB “Ask David!” section.