I was going to vote to close it, but none of our off-topic reasons seem to fit. It's not idle curiosity, nor is it really about creating or administering a web site of one's own.
On the face of it, it seems like a reasonable, and answerable, question. It might even be useful to a general user in that if you know a particular e-commerce engine is compromised, say, you'd want to avoid sites that use it.
On the other hand, it's not really a question about using a Web app. If the question were, say, "How do I pay with MasterCard on dresslilly.com?" and the answer is "You can't, because they use the Hurgleburgle ecommerce engine and they don't support it", that would fit. But that's not what it is.
Anyway, I'm of the opinion that questions like this don't belong here.
- Do you agree?
- What is an appropriate close reason for questions like this?
- Is there a Stack Exchange site that would accept such questions?
- Do we need to clarify any of our on-topic/off-topic guidance?