Hi there, we are developing sample software with more features already 8 months and almost finishing that. Our system support eBay, WooCommerce, BigCommerce, Shopify, VendHQ and soon with support Amazon as well. We are pulling all products from different channels, merging that to be unique, adding them in our warehouses, settings stocks and for each new order updating stock in all the connected channels. Please contact me for more info. Thanks