Yelp for Android determines your current location and then lets you search for nearby businesses, read reviews and so on. It also lets users filter by "Price," "Open Now," "Special Offers" and "Hot on Yelp."
Manage your money and keep track of your budget while on the move using Mint. It gives you up-to-date information on your accounts and lets you edit transaction info right on your phone. And it's password protected to make sure your information stays safe.
38) Dolphin Browser HD Don't like the stock browser that came with your Android phone? The Dolphin Browser HD adds a boatload of features, including multiple tab viewing, full multitouch gestures, a thumbnail "flick" menu, gesture-based search and URLs, a YouTube downloader and browser extensions.
Stay on top of Craigslist with this app. It allows you to create notifications for keywords and categories you choose and filter the results, just like on the Web-based application. The app periodically checks the site for new posts and downloads them to your phone for off-line browsing.
This communication app allows you to connect to all your online friends, whether they use Skype, Facebook, Windows Live Messenger, Yahoo!, GoogleTalk, AIM, ICQ, MySpace, or StudiVZ Hyves.
Stay on top of information on every country in the world with FactBook. This app draws from the CIA World Fact Book and United Nations data to provide information on every country's geography, population, government, transportation and military.
42) Key Ring
Get rid of all the loyalty cards stuffed in your wallet or dangling from your keys with this app. You can use Key Ring to scan the barcodes on all those cards and copy them. When you go to a store, the retailer can scan the barcode directly from your phone.
Streamline your Amazon shopping while on the go with this client for your Android device.
44) Dial Zero
Need to get in touch with customer service and don't want to wait on hold? Dial Zero maintains an index of more than 600 companies and how to cut through their automated answering services to get a live human being in no time.
Keep all your travel information organized and at your fingertips with this app. TripIt stores all your travel information and can generate itineraries for you.
Find or call a cab quickly, even if you're not in Manhattan. This app keeps a database of local taxi companies and taxi stands and helps you place a call to a car service when you need one.
A replacement for your Android's default audio player, TuneWiki is a social music player that provides timed, subtitled lyrics to your music in more than 40 languages. It also includes charts and real-time maps of what people are listening to around the world.
48) Google Voice
Streamline and consolidate your phones with this app. It gives you a single phone number that rings all your phones. In addition it saves all your voicemail online and even transcribes your voicemail into text. It offers a host of other features too.
Don't like the default ring tones that come with your Android phone? Ringdroid allows you to record and edit sounds and create ring tones from any song you like.
WeatherBug provides live, local, location-based weather information from its network of weather stations. It offers alerts, radar, satellite maps and videos.