I recently created a new map with two layers in Carto and was pleasantly surprised to discover that there is a carto extension available for Qlik Sense Desktop:
All I had to do was add my "embed URL" from Carto:
Amusingly the hardest part of the process was installing the extension (by downloading it into the extensions folder):
I hope that one day there will be an automated "one click" system to install extensions!