GateGuru gets extra points for being superconnected. You can email your itinerary or sync with Kayak and Tripit. You’ll see a “flight card” that shows gate info, security wait times and any announced delays. GateGuru automatically adjusts itself based on where you are — showing, say, the baggage carousel only after you land for more than 180 airports across Asia, Canada, Europe and the United States. You can also rent a car and see monthly travel stats. Plus, you can read more than 25,000 reviews and tips from fellow travelers regarding various airport terminals and amenities.