Oberlo - A dropshipping marketplace for entrepreneurs
Carrd Template Marketplace - Unofficial place for Carrd templates to build without code
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.
Marketplace Stack - A curated collection of tools for online marketplaces.
WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.
Pipedrive - Sales pipeline software that gets you organized. Helps you focus on the right deals, so easy to use that salespeople just love it. Great for small teams.