ZDrop for eBay Sellers

Nice to read about this very cool tool, zDrop, running on Commerce Server which helps eBay sellers to easily and cost effectively post and manage items on eBay.
Would love to hear about any other publicly available tools you know of that utilize Commerce Server.
P.S. - Sorry for not posting in a while – have been working heads-down on the next release of Commerce Server. If you have any requests for features or any questions about the next release, feel free to ping me.
P.P.S – I am getting my first real-world experience with model based testing and loving it. It is like having a genius work for you (a very diligent and monotony-loving genius)…but there is quite a steep learning curve involved. Will write more about the lessons learnt, when I have actually learnt them…:)