Not same, a bit harder but this is also free: https://pcon-planner.com/ and also has catalogs for actual furniture firms with actual items (where you need to register but most approve)
I've learnt this because the furniture firm designed a wardrobe for us with wrong dimensions and the designer lady was surprised that I showed them why they made wrong - they put the dimensions for outside of the wall, without taking in the account for wall thickness.
I've learnt this because the furniture firm designed a wardrobe for us with wrong dimensions and the designer lady was surprised that I showed them why they made wrong - they put the dimensions for outside of the wall, without taking in the account for wall thickness.