Sharetribe - Build your online marketplace business. You don't need a developer.
MarketplaceKit - MarketplaceKit is a platform for building different types of online marketplaces.
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.
Tangram.co - A powerful no-code marketplace builder. Launch a custom online marketplace for 100x cheaper and faster than hiring a traditional developer.
Arcadier - Build an online marketplace in minutes, no coding required.
JungleWorks Yelo - JungleWorks Yelo is software that helps you create a multi-vendor marketplace for your eCommerce business.