Businesses in Germany (Special thank you to Stefan for the list)

https://www.handelsregister.de/rp_web/welcome.xhtml

https://www.unternehmensregister.de/ureg/index.html?dest=ureg&language=de

https://www.northdata.de/

https://firmeneintrag.creditreform.de/

Dutch tools (Special thank you to Nick for the list)

https://ovi.rdw.nl/# -> Official License Plate checker.

https://www.qenteken.nl/ -> Third-Party App for License Plate Checker.

https://gestolenobjectenregister.nl/registratie/overzicht -> Dutch stolen objects.

https://www.kvk.nl/zoeken/ -> Company search

https://drimble.nl/bedrijf/ -> Company search

https://qenteken.nl/ -> Vehicle check