By the way, Mac has a built in STL viewer in Preview.
But you may want to look for a similar tool for Windows which would allow you to show potential clients digital previews [3D images] of what you can print, before you print them. That is essentially what that configurator is, they are just calling it something else.
Most STL viewers allow you to preview STL, OBJ, 3DS, and similar CAD and 3D files. There are tablet versions as well, you could preload your design files or store them in the cloud (Google Drive, Dropbox, etc) and load up a file, hand it to a client and let them preview the object right there on your tablet. For the cost of the app and a bit of setup time, you'd be much better off than that 'Configurator' The only difference is that you might have to manually edit your STL files in advance for size, color, texture, etc. before loading them on your laptop or tablet, but then you would have a fantastic and very custom tool to impress clients.