CovPass
Robert Koch-Institut
ImpfPassDE
GZIM mbH
Re-open EU
European Union
GMX - Mail & Cloud
GMX
ELESION-Smart Home Technologie
App-Support
Onlinebefunde
LABUNIQ ServicegesellschaftmbH
SwissCovid
Federal Office of Public Health FOPH
QR Scanner (PFA)
SECUSO Research Group
vicoach: Your virtual coach
cardioscan
Luscii
Luscii Healthtech