Hi Jonathan,
we as a company have used Nubisware for several "front-facing" applications. They are not exactly ecommerce but full blown enterprise applications with complex UIs and/or based on APIs.
We are very happy of the results and our customers too (which is much more important). What our customers like the most, about XQuery/BaseX based solutions, is the very low footprint and impact on their infrastructures and deployments.
M.

[1] https://www.linkedin.com/posts/global-solutions-%26-services_shortendistances-savecosts-customersatisfaction-activity-6678200998059683840-bedJ
[2] https://www.linkedin.com/posts/global-solutions-%26-services_shortendistances-savecosts-customersatisfaction-activity-6673859515550715905-21GS

On 23/06/20 22:56, Liam R. E. Quin wrote:
On Tue, 2020-06-23 at 16:34 -0400, Joe Wicentowski wrote:

Hi all,

I'd welcome any and all contributions to my list of XQuery-powered
resources:

  https://github.com/joewiz/xquery-power

Not a major ecommerce site :) but...

Most Web pages on From Old Books _dot_ Org - 
https://www.fromoldbooks.org/ - incorporate some content generated by
XQuery, and many of the pages are entirely generated at runtime by
XQuery, using BaseX.

There may still be some pages using qizx/open.

Please don't add this to your site, but, It's possible to add, ;show-
query=text/plain to the pages under /Search/ to see the XQuery itself.

Liam