Muzli - UI/UX and Design Inspiration Chrome Extension
Swell.is - Customizable, API-first ecommerce platform for innovative brands, startups, and agencies.
UI Garage - Specific mobile and web design patterns for your inspiration
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.
Design Hunt - Curated design inspiration for everyone
WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.