Turn-by-turn navigation and more. Find local businesses, view maps and get driving directions in Google Maps
Dropbox is the easiest way to store, sync, and, share files online. There's no complicated interface to learn. Dropbox works seamlessly with your operating system and automatically makes sure your files are up-to-date. Available for Windows, Mac, and Linux.
Seesmic is my favorite way to read Twitter.
Find the name and other info of songs you hear on the radio and in other places.
Foursquare is how you let your friends know your location. Plus you get lots of offers that can save you money and tips show you more about the location you're in.
Pandora lets you listen to free music.
Scan barcodes on CDs, books, and other products, then look up prices and reviews, or search for a word in a book and find where it occurs. You can also scan QR Codes containing URLs, contact info, calendar events, etc.
and it syncs with RememberTheMilk! Astrid is a todo list / task tracking system for Google's Android platform built with your productivity in mind. Astrid's goal is to be simple to use with the features you need to stay productive and get things done.
Use your camera. Aim it at objects and Google will try to find you more information about that object.
It took me a while before i installed this one, but im not regretting it. It copies the iPhone style of SMS 'chat' and includes neat popups so you don't need to switch apps when a txt comes in. Brilliant!
Aldiko is an ebook reader, works brilliantly and reads a few formats (though epub is best)
The best Twitter client is Twitter.
Easy to create mobile service reviews. Supports foursquare checkins. As you rate service it changes your tip. Share your service reviews with your friends on your twitter feed, find places that have good service. Free on Android Market.
My Tracks is an application for your AndroidTM phone that enables you to record GPS tracks and view live statistics – such as time, speed, distance, and elevation – while hiking, biking, running or participating in other outdoor activities. Once recorded, you can share your tracks, upload them to Google Spreadsheets and visualize them on Google My Maps.
Pageonce Personal Assistant is the most effortless way to manage your life online, anytime, anywhere. The app enables users to monitor their banking, credit card transactions, investment accounts, keep track of frequent flyer miles, travel itineraries, flight information, cell phone minutes, and more.