@우성짱 님이 좋아하시는 nextjs/gatsby 기반의 이커머스라고 합니다.

2번은 nextjs기반은 아닌 것 같고,  모두 Reactjs 기반입니다.

1. Snipcart - Pluggable Shopping Cart for Gatsby and NextJS

https://snipcart.com/

2. Reaction Commerce - 10.7k Stars, 2k Forks, and 5000+ Contributors

https://reactioncommerce.com/

3. JAMstack E-Commerce Professional - A Newborn

https://github.com/jamstack-cms/jamstack-ecommerce

4. Next.js Commerce - A starter kit for ECommerce with Next.js

https://nextjs.org/commerce