Swell.is - Customizable, API-first ecommerce platform for innovative brands, startups, and agencies.
Vendure - Open-source headless e-commerce framework for developers
Shopify - Shopify is a powerful ecommerce platform that includes everything you need to create an online store and sell online. Try it free for 14 days.
Headless Commerce Resources - Curated collection of the best commerce resources
Chord Commerce - Chord is a commerce-as-a-service software for fast-growing D2C brands.
WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.