Spree Commerce is a complete modular, API-driven open source eCommerce solution built with Ruby on Rails
Common Integrations with
ERP, Finance – Automatically sync order, fulfillment, inventory, customer, and other key data (e.g., FreshBooks, NetSuite, QuickBooks)
Billing – Update payment transactions and statuses automatically (e.g., PayPal, Square, Stripe)
Logistics – Keep fulfillment, shipping, and inventory levels in sync (e.g., Amazon FBA, ShipStation, Shipwire)