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1Budapest
9flats.com
A
ABC Fiere
Ab-in-den-Urlaub
Abreu
Agoda
Agriturismo-on-line
Aia Palace
AIC Travel
AInventory Updater
Airbnb
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All Inclusive Hotel
Alpha Rooms
Altoetting
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Amden-Weesen
Amitour
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Anxur Tours Group
Appian Line
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Asia Web Direct
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Atel
Atrapalo
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Avios
AxisData for Open Travel Service
B
Back Pack Online
Badbirnbach
Bad-reichenhall
Bali Hotel Guide
Bancotel
Barcelo viajes
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Basel Tourismus
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Bed-and-breakfast.it
Bedandbreakfast.it
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Best Spa Hotels
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Budapest hotel start
Budgetplaces
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Butik Hotellier
C
Caesardata
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Canton de Vaud O.T.
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Carlton hotel group
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CentralR
CentralRez
Centralreservations.com
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Charming Italy
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CIT Holydays
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Classic international hotel
Clickbed
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Consolid Travel
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D
Daniel Reyes
Data Hotel
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Despegar
Destinia
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Dithmarschen-tourismus
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Dolomiti.org
Domina Vip Travel
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Dresden.de
DTS
Dynam-Iq

E
Easyconsulting
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Etineries
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Expedia
Expo 2015
Expotel
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Eyecom-Booking
F
Farmbooking
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Feratel/ deskline
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Freiburg
Fribourg Region
Fvg
G
Ga.Ya
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Genares
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Google HPA
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H
HAlcon Viajes
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HReservation
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I
ICastelli.net
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illaagomaggiore.com
ImperatoreTravel
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In1solutions.com
Infohostaltravelmkt (hotelisimo)
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Instant worldbooking
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ItalCamel
ItalyBookings

ItalyHoliday
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Itwg
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J
JacTravel
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Jesolo OK
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K
Keytel
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L
Lago Maggiore E.T.
Lastminute.com
Laterooms
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Leading Companies International
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Life Apartments
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Loetschental Tourismus
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M
Mappamondo
Marsol
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MyComp
N
N2M
Naturarena
Navarino Services
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O
ODIGEO Connect
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Olympia Viaggi
Omega Tourism
OnEolie
OnIschia
Online Gds
Only Apartaments
OnlyRooms
Open Travel Service
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OpenPro (Alliance-Réseaux)
Opodo(Alliance-Réseaux)
OpenTours
Orbitz
Ostrovock.ru
Ostseefiordischlei
P
Paginegialle
Partiendo
Pegasus
Personal booking (wrooms)
Perugia.com
Pilgo
Praettigau Tourismus
Prestigia
Price Travel
Priceline
Pugliae.com
R
Rakuten
RatesToGo
Reconline
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Reserver
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Restel
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RoomTrade
RSI Group
RTS - Realtime Travel Solution
Ruhr-tourismus
Russia In

S
SalsaBooking
Sardegne.com
Sawadee
Savognin Tourismus im Surses
Sauerland
Scharbeutz
Schick Hotels
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Sestante
Sfrecciando
Sharebooking
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Sidetours
Simple Booking
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Spa Hotels Collection
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Special tours
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Stardeck
StartBooking.com
StyleHotels
Sunhotel
Superbreak
Sybelio
Synxis (globeres luxuryres)
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Szallas.hu
T
Tablet Hostel
The Best Spa Hotels
ThinkHotels.com
Thueringen Tourismus
Tick Tab
Ticket.com
Titanka
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Tomas Travel
Tourico
Tourisme de Barcelona
Tourisme Neuchatelois
Transhotel
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Travel europe
Travel.it
TTravelGate
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Travelocity
Travel Republic
TripAdvisor TripConnect
Tripidea
Tui
Turismo Piemonte
U
Ultranet
Unister
Unitravel
V
Valle D' Aosta Pass
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Vda
Venere
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Ventanagroup
Verona Booking
Vertical Booking
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Villars Tourisme
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VisitAlghero
VisitBerlin
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VisitItalyTours
VisitTrentino
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W
W-Reservation.com
Wallis Tourismus
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WHL
Willingen
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WishDays - Emozione3
WithBooker
Wonderfull Sardinia
Wookbook
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Wotif
X
XBookLite
Xenia
Y
YourSpainHostel
YourVoyager