Centralizing online travel deals is smooth sailing for Kayak Software. Through its websites (KAYAK.com, swoodoo.com, and SideStep.com) in about 15 countries, the company displays rates on airfare, hotels, rental cars, and cruises from more than 500 other travel websites. Kayak Software offers fare information from Continental Airlines and American Airlines, as well as prices from Funjet Vacations, Marriott International, and InterContinental Hotel Group, among others. In addition to booking, the firm's websites and mobile applications provide destination information, travel tips, member discounts, and hotel descriptions. Founded in 2004, Kayak Software filed to go public in late 2010.