Actually UNA can deliver your request, they have this kind of information.

Andrew why want you show some showcases?! 

Most of the sites that we develop using UNA are white labelled & covered under NDA. Currently we are working on a number of sites for large government organisations as well as a few niche communities with large memberships heading to the millions, offering live streaming and networking services. All of this gives us a lot of great feedback for improvements to UNA core functions, but we are able to directly reference or demonstrate these sites.