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.
Salesforce Commerce Cloud (formerly Demandware) is a cloud-based eCommerce solution that touts flexibility and scalability for enterprises. It features merchandising tools, such as sorting, filtering, and image zooming.