Here is a listing of user submitted websites that are using Microdata Generator JSON-LD generated code on their websites. To be added to the list submit your website here.
TYPO3 Freelancer: http://www.crea-sign.de/ | Google Test Page
Hiking Nepal: http://www.hikingnepal.com/ | Google Test Page
Budget Direct Insurance: https://www.budgetdirect.com.sg/ | Google Test Page
Junk Car Bin: https://www.junkcarbin.com/ | Google Test Page
WEBEST Agencja: https://webest.pl/ | Google Test Page
Tyrol Cleaning Services: http://www.tyrolcleaning.com/ | Google Test Page
Beehive Learning Academy: http://www.beehivelearningacademy.com/
Dentist Alexandru Necula: https://www.alexnecula.ro/
ATK-TIetofix | Keravan Tietokonehuolto: https://tietofix.fi
Note: I have no relationship to any of these websites, I did not work on them, they are not clients, they were all submitted to me here: submit your website here.