BigCommerce

BigCommerce is a robust, enterprise-focused e-commerce platform (SaaS) that competes directly with Shopify. It targets medium to large businesses and fast-growing brands. Its core strengths include native B2B functionality, superior built-in features (like multi-currency), and an API-first architecture that supports headless commerce. It imposes no transaction fees.

While its learning curve is steeper and its template selection smaller, it offers greater out-of-the-box capabilities for complex stores. It ranks highly for its scalability, feature depth, and suitability for businesses with advanced e-commerce needs that may outgrow other platforms.