Shopify

Shopify handles the whole retail stack, product catalog, cart, checkout, payments, shipping labels, inventory, behind a theme you can customize without touching code, and an app store with thousands of add-ons for reviews, subscriptions, loyalty programs, and nearly anything else a store might need. Its checkout is consistently rated among the highest-converting in ecommerce, which matters more to revenue than almost any other single feature.

Pricing is tiered by monthly fee plus a transaction fee that drops (or disappears) if you use Shopify Payments instead of an external processor, and app subscriptions stack on top as a store’s needs grow, so a heavily customized store’s real monthly cost is often well above the base plan price. Product and order data exports as CSV, and a well-documented API supports moving data elsewhere, though a store’s theme, app configuration, and checkout customization don’t move cleanly to another platform. The ceiling is cost creep from apps and transaction fees at high volume, and highly custom storefront logic that pushes past what themes and the API comfortably support. It fits anyone selling physical products who wants a proven, high-converting checkout without building payment and shipping logic from scratch.