National certification schemes
The HbbTV Test Suite provides a set of test material to enable implementers to test receivers against the HbbTV specifications and other associated specifications (such as OIPF). National certification schemes, that usually award a locally commercially relevant logo for devices that are tested using formal lists of HbbTV and additional platform specific tests, often also list the certified compatible models.
A few examples are provided here:
UK
https://www.freeview.co.uk/get-freeview/products
Italy
https://www.lativu.tv/_common/pdf/TV-Certificate-lativu.pdf (from 2021)
Spain
https://www.lovestv.es/
https://youtu.be/ZoFNAKFkwoo