CedCommerce Walmart Connector

Although there are some little idiosyncrasies with this app, the customer support is great and they help you figure it out. Once you get the hang of it, and stop making little errors, it is pretty easy to use and you don't need support.
When you do, they are very fast to answer you and help by guiding you through the steps or correcting your errors.
Totally recommend if you are a Walmart.com seller.