AGODA
BOOKING.COM
BOOKIT.NL
BOOKIT.COM
CITYBREAK
EGENCIA
EXPEDIA/HOTEL.COM
CTRIP
FERATEL
GTA TRAVEL
HOTELBEDS
HOTUSA
HRS
JACTRAVEL
KURZ-MAL-WEG
LATEROOMS
ORBITZ
OSTROVOK
RECONLINE
SPLENDIA
SWISS TRAVEL CENTER STC
TABLET HOTELS
TOMAS.TRAVEL
AUSGUCK
CASABLANCA
HOTLINE
IBELSA
SiTEC
GASTWARE (in Arbeit)
HOPE (in Arbeit)
HS/3 (in Arbeit)
PROTEL (in Arbeit)
GOOGLE PRICE ADS
KAYAK
TRIVAGO
TRIPADVISOR
TRIPADVISOR INSTANT BOOKER