Akeneo - Akeneo is an open-source Product Information Management solution.
Sellbery - Easily automate product feeds from Shopify, Magento to Amazon, eBay and other marketplaces. Fully utilize the most profitable eCommerce channels and increase sales.
AtroPIM - AtroPIM is a free, 100% open source and configurable PIM solution. It's easy to keep catalogs up to date, add new products or change existing ones, deliver your current product information across all channels.
Radial - Radial offers order management and store fulfillment solutions.
40three Commerce Cloud - 40three offers a PIM solution to manage high-quality product information for e-commerce. Centralize, optimize and distribute all your product information on one platform and connect sales channels automatically. Without breaking your budget.
eBay Enterprise - eBay Enterprise provides a variety of marketing, customer care, payment processing, fulfillment, fraud detection services.