Get the Best Travel Deals

Go online to book a hotel room, and you’ll be bombarded by options from Las Vegas to Laos, in no particular order. There’s also a constellation of hotel-sorting Web sites to help travelers find their way to the deals. Some of these businesses, such as Expedia, Priceline, and TripAdvisor, have been around for years. Here’s a sampling of some providers that have found a niche in this crowded market.