Web search engine indexing services

Hi am looking for website company can provide me with services like
http://www.carrentals.com/ 
booking.com,
http://www.rentalcars.com/.
https://www.airbnb.com/
 
I need to build my own website i will provide car rental services  , my question what type of engine they used to pull information from other website and bring it for the customers.or there are template I can buy it. but I need something professional and fast and stable and used by big companies.
G55Asked:
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skijCommented:
Hotwire offers a car rental API:
http://developer.hotwire.com/docs/read/Rental_Car_Shopping_API

Clear Car Rental also has an API:
http://www.clearcarrental.com/car-rental-api

RentalCars.com offers a widget that can be plugged into your site:
http://www.rentalcars.com/AffiliateExample.do

Expidia offers an API for hotels.
http://developer.ean.com/
http://www.programmableweb.com/api/expedia
G55Author Commented:
Hi they look fine what about .www.airbnb.com
skijCommented:
www.airbnb.com uses AirFlow.  To learn more about AirFlow, follow the links below:

http://nerds.airbnb.com/airflow/
http://pythonhosted.org/airflow/
https://github.com/airbnb/airflow

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