- A - G
- AANHotels
- Advertising Online
- Airfare.com
- Allrez.com
- AlphaTravel.de
- AMSHotelService
- AMSHotelsGuide
- Asiahotels.com
- Atrapalo
- Availpro.com
- Bancotel
- Barcelonahotels.es
- Bedsearcher
- BHRC
- BHRHotels.com
- Bookassist
- Booking.com
- BTM.de
- Centralr.com
- CentralReservations.com
- Chambres
- Classic Vacations.com
- CngHotels
- Direct With Hotels
- DiscountCityHotels.com
- Easytobook
- eBookers
- eLong.com
- EpoqueHotels
- Expedia
- FrankfurtTourismus
- Funtyme
- GayRes
- Globekey
- GoTravel.nl
- Gulliver Ireland/GullNet
- H
- Halcon.com
- HolidayCity.com
- HotelAdvice
- Hotel-Assist.com
- Hotelbeds
- HotelClub
- Hotelcompany.com
- Hotel.de
- Hotelinamsterdam.info
- Hotel Mart USA
- HotelREZ.net
- HotelSearch.com
- HotelsGuru.com
- Hotels-London.co.uk
- Hotels.nl
- HotelSpecials.nl
- Hotelzon.com
- Hotwire.com
- HRN
- HRS - HSA2.0
- Hubx
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- I - M
- IAPA Lateaway
- In1Solutions
- Infotel
- Inthotels.com
- IPTU
- ITS
- JustInTimeHotels.com
- Koeln.de
- Lastminute.com
- Laterooms
- LondonNights - NEW
- Mirnet.de
- Muenchen.de
- N - S
- Nachtjeweg.nl
- Netbook
- NetHotels
- Opodo
- Orbitz
- Peripatus
- Planigo
- Priceline.co.uk
- Quikbook.com
- Rates 2 Go
- rma.de
- Secure-Res
- Ski.com
- Sol.com
- SouthwestRooms.com
- Splendia.com
- Superbreak
- Surland.com
- T - Z
- The Independents.co.uk
- ToBook
- Totalstay
- TravelEurope.it
- TravelStay
- TravelWorm.com
- TUIHotels
- Unitravel|GHRS
- Venere
- VisitHotels
- VisitHotels.com
- Webresint.
- WeekendCompany
- WorldRes.com
- Wotif
- WRH.com
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