DataViz lets you create and edit Word and Excel files and PowerPoint presentations, and view PDF documents. A free version lets you view Word and Excel documents. Cost: $14.99
This app, by Burrotech, lets you use your phone's camera to scan contracts, receipts, and other documents as full-color PDFs and e-mail them to your desktop. Cost: $14.99
See what your customers really think about you with GPS-based app Loopt, which shows you where your nearby friends -- or customers -- are on an interactive map and displays their Yelp ratings. Cost: Free
Seesmic neatly groups all your Twitter timelines in one screen. The coolest feature: the ability to customize alerts, so you will be notified only when specific tweets are posted. Cost: Free
Quickly exchange contact information without fumbling with cell phone keypads using Bump. It allows two users to swap info simply by tapping their phones together. Cost: Free
Conference via text message with TextPLUS, which enables users to text up to 20 people at once. It's a fast and cheap way to communicate with your employees and colleagues. Cost: Free
It’s unfortunate, but losing your phone is pretty much a part of life. WaveSecure takes a little of the edge off by allowing you to remotely lock the device, track the SIM card, and back up any data so you won’t lose any precious info or contacts. Cost: About $7 for every 3 months, $21 for one year. Free lifetime subscriptions for Android users until the end of March, 2010.
Gone are the days of those loud, startling phone calls in the middle of an important meeting. Using GPS, Locale lets you choose your phone settings based on your most common locations, then switches to that setting automatically when you enter the area. Cost: $9.99
Receive IMs and updates from AIM, Yahoo, Google Talk, MSN Messenger, ICQ, Skype, Twitter and Facebook users all through one program called Fring. Fring consolidates all of your messenger clients into one mobile app so you can chat with multiple people on multiple programs in one place -- and on-the-go. Cost: Free
Need a graphic designer in the New York City area? Send out a request on WhosHere, a proximity-based social networking app for iPhone, that connects people using queries and then allows you to make free text messages or calls to them. Cost: Free
