HEDNA - Hotel Electronic Distribution Network Association  
   International not-for-profit trade association formed by hoteliers to promote the booking of hotel rooms through the use of Global Distribution Systems (GDSs), the Internet and other electronic hotel reservation methods.
   http://www.hedna.org/

Abacus CRS  
   Provides Computer Reservation System (CRS) services specially tailored for customers in the Asia-Pacific market.
   http://www.abacus.com.sg/

Galileo GDS  
   The Galileo global travel distribution system, also known as the Apollo system in North America and Japan.
   http://www.galileo.com/

Worldspan GDS  
   The Worldspan global travel distribution system.
   http://www.worldspan.com/

WizCom International, Ltd.  
   Provider of Global Distribution Systems (GDS) and internet connectivity, Central Reservations Systems (CRS) and information services to the hotel, car rental and tour industries.
   http://www.wizcom.com/

Axess  
   Japanese central reservation system. Features products, services, and news. In Japanese and English.
   http://www.axess.co.jp/

Infini  
   Japanese CRS provider of travel information and services to the travel industry.
   http://www.infini-trvl.co.jp/

VIP International  
   Provides central reservation technology and services, call center service , plus revenue, channel management and merchandising consulting.
   http://www.vipintcorp.com/

GENESIS Travel Distribution System  
   A travel agency initiative to strengthen the travel distribution system and to launch the GENESIS Project, a re-engineering of the reservations, ticketing, settlement, and accreditation relationships between travel agents and air carriers.
   http://www.genesistds.com/

InnoSys Inc.  
   Provides GDS/CRS/airline host connectivity solutions, including gateways (TCP/IP, ALC, X.25), API, workstation, and printer software.
   http://www.innosys.com/

WorldRes  
   Connects member hotels worldwide with travelers via a global network of partner websites and call centers.
   http://www.worldres.com/

InnPoints Worldwide  
   Offers hotel marketing support, internet hotel reservation software, voice reservations and is a GDS provider for unique and boutique lodging.
   http://www.innpoints.com/

REZlink International, Inc.  
   Provides interface with GDS distributors, real-time reservation technology, and central reservation system products.
   http://www.rezlink.com/

Pegasus Solutions, Inc.  
   Provides transaction processing and electronic commerce services to the hotel industry worldwide.
   http://www.pegs.com/

Amadeus GDS  
   The Amadeus global travel distribution system.
   http://www.amadeus.com/

Sabre GDS  
   The Sabre global travel distribution system.
   http://www.sabre-holdings.com/