Square Online Store - Build your own online store with Square
Muglaunch.com - Design and sell print on demand products easily @ Muglaunch
Swell.is - Customizable, API-first ecommerce platform for innovative brands, startups, and agencies.
3D Hubs - Airbnb for 3D printing
WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.
Mockupify - Automate your print-on-demand product creation process