Services

http://www.weather.com/services/xmloap.html weather api
http://developer.mapquest.com trip mapping api
http://www.travelguard.com/aboutus/affilateProgram/ travel insurance affiliate

Local Deals

http://yipit.com/ Local coupon aggregation service
http://www.offersdb.com/ local deals
http://www.wishpond.com discounts on local groceries & other retail items

Travel

http://www.yachtbooker.com/Yacht-XML-Feeds.html yachts
https://www.onesky.com/affiliates/index.cfm jets
http://www.traveltek.net/agency-solutions.phtml these could be useful
http://travelstrategybusiness.com/gds-xml-travel-switch/
http://www.msccruisesusa.com/us_en/homepage.aspx cruises
http://www.amadeus.com/cruiselines/x40715.html
http://developer.yapta.com/ airfare
http://www.hotelscombined.com/ hotels
http://www.planyo.com/learn-more.php online reservation for golf, spas, conference rooms, etc
http://www.rezgo.com/why-rezgo book sightseeing tours, adventure trips and other attractions
http://www.sabretravelnetwork.com/home/products_services/developer/ hotels, airfare booking
http://www.sletoh.com/affiliates.html specialized in europe & australia hotel booking
http://affiliates.superbreak.com/adminsuite/2004/home.cfm?content=pa.showHomePage specialized in UK hotels
http://www.touricoholidays.com/en/tech.html full whitelabel booking
http://travelportuniversalapi.com/businessmanager/index.php could be useful gds system
http://www.trazzler.com/ trip recommendation api
http://www.shermanstravel.com/ trips

Travel Certs

http://www.corporatetravelgifts.com/
http://www.holidaytravelincentives.com/
http://www.iimgroup.com/travel_promotions/?gclid=CPSm9MCA3aoCFcl56wod4V_N6A
http://www.odenzaproducts.com/odenzaproducts/mainpage.aspx
http://www.incentivesmarketplace.com/incentive/corporate-gifts-results.php?hot_category=Travel
http://www.ultimatepremiums.com/index.htm
http://www.ettsi.com/index.php
http://giveawayvacations.com/ 39 cent certs
http://sunrisepremiums.net

Live Chat

http://www.liveperson.com/ $500 a month
http://www.assistly.com/pricing/ free for one agent
http://www.sightmax.com/iama/hosp the best


Wholesaler

http://www.liquidation.com closeout products
http://www.gowholesale.com/affiliate/ searchable with affiliate
http://www.dropshipdesign.com products for drop shipping
http://directbuy.com/ free visitors pass