Inventory management is handled by Sumtracker for both single store owners and multi store owners. Keep your inventory in sync with Shopify, Amazon, eBay, and Etsy stores. Stocks of multiple listings can be updated using the same product. Automatic inventory updates for packages. control multiple sites. Get a detailed inventory log that tracks every product movement. Simple stock updates. Easy to use formats for bulk import and export. Automate your processes and use a central control panel to stay on top of your inventory at all times.