I have been a very happy and satisfied user of inkFrog from the old Classic to the current Open version of the software.
I use the software to create listings on eBay. I find it makes creating new listings easy and much quicker than if I were to try to create a listing using ebay directly. The template construction for listings really streamlines the listing process. I like being able to save a listing then return to it if I am interrupted while creating it.
I would recommend inkFrog to anyone with a need to create market listings for the marketplaces they support.