Google Maps

There are many wonderful google products but one that I think is the most useful is google maps. It is great for finding places in the city and it is also great for planning a trip and finding the best route. You can choose whether you are traveling by city transit, car, or walking. If you are taking transit it will tell you exactly which buses to take and when the next bus will arrive. You can also use street view to see what the places you are traveling to look like. Sometimes, the software does not find the best route, but I think it will get better with time.