BigCommerce is a SaaS platform that allows SMBs to develop eCommerce sites. Features include the capabilities to design the storefront, configure products, manage payments, generate traffic, and optimize conversion.
Shopify is a commerce platform designed for both online stores and retail locations. Shopify offers a professional online storefront, a payment solution to accept credit cards, and the Shopify POS application to power retail sales.
Wix is a free, hosted website builder, designed to be user-friendly and customizable without requiring coding from the user. It is well-known for its eCommerce solution, which allows users to build an online store.