Open Travel Alliance
De Open Travel Alliance (OTA) is in 1999 opgericht, hoofdvestiging in Washington (VS,) voor het tot stand komen van Crossindustrie afspraken binnen de reissector voor de uitwisseling van informatie. De uitwisseling gebeurt onder andere in een XML format. De ledenlijst is op te delen in:
De leveranciers/beheerders van computerreserveringssystemen (CRS)
De leveranciers van reisgegevens,
De reisagenten/internetportalen.
Leveranciers van software
Leveranciers van hardware

Leden

De computerreserveringssystemen (CRS)
 Amadeus IT Group
 Galileo International
 Worldspan
 Sabre Holdings

Leveranciers van hardware
 IBM

Leveranciers van software
 Microsoft 
 Open Travel Software 
 SAP AG
 Protel Software

Diversen
 Air Transport Association
 Airlines Reporting Corporation
 Airline Tariff Publishing Company (ATPCO)
 SITA

De reisagenten/internet portalen en de leveranciers van reisgegevens
 Accenture
 Accor
 Accovia
 AgentWare
 AirTran Airways
 Altius Par
 American Airlines
 American Automobile Association
 American Hotel & Motel Association
 American Tours International, LLC
 Amtrak
 ANC Rental
 ARINC
 ATLAS Solutions
 Auto Europe
 Axisdata
 BASK
 Baymont Inns and Suites
 Best Western International
 BTI Canada
 Car Trawler
 Carlson Hospitality
 Cendant Car Rental Group
 Cendant Corporation
 CNG Travel Group, PLC
 Computerized Airline Sales & Marketing Association
 Contal Systems Pty. Ltd.
 Continental Airlines
 CSA Travel Protection
 Cultuzz Digital Media
 Datalex Communications USA
 Delta Air Lines
 Derbysoft
 Dollar Thrifty Automotive Group
 The Eastman Group
 EC Promotion Organization for Travel Industry
 EDS
 Elleipsis
 Electric Vine Interactive
 Enterprise Rent-A-Car
 Europecar Australia
 Europcar International
 Expedia
 Fidelio Cruise Software
 Friend Communications
 GHRS
 Globus and Cosmos
 Global Matrix
 Goldenware Travel Technologies
 Group Voyagers
 HEDNA
 Hertz Corporation 
 Hilton Hotels Corporation 
 Hospitality Solutions International 
 Hotel Booking Solutions 
 Hotel Concepts 
 Hotel Information Systems 
 Hotelzon International 
 Hyatt Corporation 
 IDeas Inc. 
 IGM Web 
 Integrityone 
 Interactive Technologies 
 InterContinental Hotels 
 Interface Technologies 
 IPEC 
 ITA Software 
 Itravelinsured 
 KDS 
 Lanyon 
 Le Méridien Hotels & Resorts 
 Leonardo Media 
 LibGo Travel 
 Lumina Technologies Pty Limited 
 Marriott International 
 Meridian7/AdventureCentral.com
 Midwest Airlines 
 Multi-Systems Inc. 
 National Golf Course Owners Association 
 Navigant International 
 Newmarket International 
 Northrop Grumman 
 Norwegian Cruise Line 
 OAG Worldwide 
 Omni Hotels 
 OpenJaw Technologies 
 Orange Technologies 
 Orbitz 
 Outrigger Hotels & Resorts 
 Pass Consulting 
 Passkey International 
 Pegasus Solutions 
 PlanSoft Corporation 
 Realtime Enterprises
 Resonline
 Rezlink International
 Royal Caribbean
 The Rubicon Group
 Shanghai DerbySoft
 SideStep
 Site Visit
 SkyTech Solutions
 SoftBrands Hospitality
 Softvoyage
 Star Alliance
 Starwood Hotels & Resorts Worldwide
 Stena Line
 Strategic Systems Technology
 Sun Country Airlines
 Sun Microsystems
 Tauck World Discovery
 Telme Online Limited
 The Software Group
 Tourism British Columbia
 Tourco
 Tourism Technology
 Travel Technology Group
 Travel Technology Initiative
 Travelport
 Traventec
 TravTech.com
 Trilegiant Loyalty Solutions
 Trisept Solutions
 TRX
 Unisys Global Transportation
 United Airlines
 US Airways
 Vanguard Car Rental USA
 VFM Interactive
 Viator.com
 Virtuoso Ltd.
 Voyager Technologies
 WizCom International
 World Access Service Corporation

 Wotif.com

Externe links
Website Open Travel Alliance

Luchtvaartinstelling
Toerisme
Samenwerkingsverband
Standaardisatieorganisatie