WinSell Pro 

Full featured, SQL based business software: invoicing, point of sale, inventory control, and order fulfillment for wholesale / retail business including fully integrated web based ecommerce shopping cart for b2b and b2c
invoice software inventory control software inventory shopping cart invoicing pos ecommerce e-commerce windows retail wholesale quickbooks integration pos toolkit

YukonSoft E-Business Solutions (Y.E.S.!) 

Y.E.S.! Retail and e-Commerce System with International currencies, a Web Development system, automated eBay connectivity and complete Front Office & Back Office Systems, including Inventory Management & Control, Sales Tax Calculation, and a POS
ecommerce ebay quickbooks inventory management sales website internet e-commerce