There is https://floorplanner.com
They are used in a variety of situations and have been doing this for over 15 years. Floorplanner is used in high end shops to show arrangements of furniture, on website to showcase apartments etc. that are for sale and a lot of different use cases.
What is the use case of Roometron that you see it does best?
Because this, and more very strange rules it is very hard for ticketing systems to get into the Italian market.
Some examples:
- not allowed to change to time or name of the event after the 1st ticket is sold
- only allowed section names in halls from a know list
- free tickets on events... can only do this under strange conditions
- smart card application, for encryption, must run on a physical server in Italy. You should not be able to log into the ticketing box office if that smart card application is not running.