Open source eCommerce platform on Symfony
Shopizer java e-commerce software
Domain-driven eCommerce for Django
A framework agnostic, multi-gateway payment processing library
SmartPOS (Includes->SmartERP distro of Idempiere ERP) is 100% Web
FIDO U2F Integration for Magento 2
Translation utility
Complete editors toolset and CMS for larger website and shop projects
Web ordering system for community food coops and veg box schemes