NOWANDLIVE
Booking.Com is the number 1 site that most of you probably know and may have booked through in the past.
In Agoda, you can book hotels, holiday apartments, flights, and shuttle services from various airports.
In Expedia, you can also book hotels, flights, holiday apartments, packages, car rentals, cruises, etc.
Trivago is a convenient hotel comparison site that allows you to compare a variety of hotel booking sites such as Booking.com, Expedia, etc.