3. AntennaSearch
Ever get hit with a roaming bill in the hundreds of dollars? Know whether your cell phone is going to work -- and what the cost will be -- before you leave home. AntennaSearch provides free information on cell phone coverage and reception, including cool Google mashups that make your search more interactive.
4. About Airport Parking
Find the best airport parking for your trip -- short-term, long-term, valet, etc -- along with prices, availability and more. Up to date parking information can mean the difference between making and missing a tight flight departure time.
5.Kayak
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Kayak.com searches 100+ travel sites for cheap fares, hotel rates and more. The interface makes it easy to compare and filter results and lets you buy directly from an airline, agency or Web site.
6. SideStep
Like Kayak, a travel aggregator site. SideStep searches more than 150 Web sites with a strong ability to tie together the different aspects of your travel planning -- airfare, hotels, cars and more -- on a local basis.
