WebSphere Commerce - This solution from IBM is the leading platform for medium to large business customers. It was rated #1 by Forrester in "The Forrester Wave™: B2C eCommerce Platforms, Q4 2010" (see preview here). I have led various projects in B2C and B2B in a Solution Architect role.
Magento Enterprise - This is the licensed version of the open source product Magento. It offers many features found in WebSphere Commerce and is scalable. This version of Magento is licensed and includes support from the Magento/Varien team. Magento was #1 in the "Emerging Players to Watch" in "The Forrester Wave™: B2C eCommerce Platforms, Q4 2010" (see preview here).
WordPress - An Open Source blogging software (running this site) commonly used to create blog sites. I utilize WordPress to create a business friendly CMS (content management system).