3DCart - Provides an online tool that enables users to create their own website or online e-commerce stores.
https://www.shift4shop.com/
Magento - A open source software with shopping cart & full e-commerce functionality to enable businesses to sell products and more.
https://business.adobe.com/products/magento/magento-commerce.html
Nexternal Solutions - Provides web-based ecommerce software to businesses interested in maximizing their success.
https://www.truecommerce.com/online-storefront-integration
Sage - Provides powerful accounting and business management software and services to small and mid-market companies.
https://www.sage.com/en-gb/company/
ShopDirect - A company that offers ecommerce software.
https://www.comalytics.com/
Sol Software Usa Inc - A developer of windows software focusing specially on web utilites and system softwares.
http://www.solsoftware.com