http://www.amadeus.com/amadeus/amadeus.html
Amadeus offer a range of travel related services including white label travel search engine.
http://www.wwte.com/eta/wwte.asp
Outsourced travel sales. WWTE is the wholesale / white label brand name of Expedia.com
http://www.freedomtravelgroup.co.uk/
Freedom Travel are a white travel agency. They offer everything required to set up a travel agency, including equipment, payment processing, training, etc.
