Swell.is - Customizable, API-first ecommerce platform for innovative brands, startups, and agencies.
And We Evolve - Subscription box for stylist-picked secondhand clothing
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.
Trove Market - The easiest way to buy/sell used + vintage furniture
Vendure - Open-source headless e-commerce framework for developers
Wallapop - Wallapop is a free mobile app that acts as a virtual flea market for buying and selling items locally.