BBSmart - Allows you to see your emails as HTML so no more annoying links in place of pictures. Costs $29.95.
Google Talk - A full version of the popular Google Talk IM client for your BlackBerry. Can do everything with your desktop client, even save chats to your account.
IM+ All-in-One Mobile Messenger - Allows you to IM with your contacts on AIM, GTalk, ICQ, Jabber, MSN, MySpace IM and Yahoo. Cost is a rather hefty $49.95.
IM+ for Skype - Gives you the ability to chat with your Skype contacts, see who is online and use your Skype Out account all from your mobile phone with no need for a computer or Wi-Fi. Costs $29.95.
TwitterBerry - While it is arguable if this will actually increase your productivity, it is still nice to have access to your full Twitter account while away from the office or on the road.
BlackBerry Database Viewer Plus - Allows you to view MS Access, Excel, FoxPro, Oracle, SQL Server, MySQL databases directly on your BlackBerry. Costs $19.95.
eOffice - A Microsoft Office compatible suite of applications that allows you to view and edit documents, spreadsheets, PDFs and everything else you could hope for an office application to do. Costs $29.95.
eSpell - eSpell is a spell checker that works on documents, emails and SMS text messages on your BlackBerry. Costs $19.95.
MSDict Concise Oxford American Dictionary and Thesaurus - The Oxford dictionary and thesaurus comes to the BlackBerry with over 180,000 entries in the dictionary and more than 350,000 synonyms and antonyms in the Thesaurus. Costs $39.95.
Berry Locator - While not exactly about productivity, Berry Locator is an essential app for anyone on the go. If you lose your beloved phone, you can send an email to this app that will be displayed on the screen telling whoever finds it how to get it back to you, and if you have GPS enabled, you will see a map showing you where it is. Costs $6.95.
Personal Productivity Assistant - Allows you to keep an eye on all sorts of accounts while you are on the go. You can keep an eye on your credit card statements, stock broking accounts, cell phone minutes and even monitor your Netflix account from this handy app. Costs $4.95 a month or a one time fee of $29.95.
Pocket Express - Pocket Express gives you flight status, weather, stock reports, a mobile concierge service and more. Costs $9.99 a month, or $99 a year.
RDM+: Remote Desktop for Mobiles - A remote desktop access system for your phone that will give you full control of your chosen computer. Costs $49.95.
Agendus - A Personal Information Manager that doesn’t overwrite your existing built-in applications, but instead stores its data in the same locations as your phone so all information is available to both apps. Aims to cut the number of button clicks needed to do tasks. Costs $39.95.
e-Mobile Today Professional Edition - Significantly overhauls your homepage so it shows more information such as appointments for the day, missed calls, quick access to contacts and a whole lot more. Costs $29.95.
Google Sync - This free app will synchronize your Google Calendar and contacts with the built-in applications in your BlackBerry.
Remember The Milk - MilkSync is a bi-directional synchronization tool for the built-in Tasks app in your phone. They offer a free 15-day trial, but after that it is only available to Pro account subscribers.
Travel Planning & Booking
Travel+ USA - Gives you information on bus, flights and train schedules, ability to look up hotels, sort results by price and more. Costs $19.95.
Travel Mate For BlackBerry - This app allows you to save all of the information about your trip, track expenses, convert currency, look up facts on your destination and more. Costs $25.99.
WorldMate Live - WorldMate Live is the perfect travel companion. It allows you to book hotels on the go, check weather, convert currencies and more. If you pay for the paid version, you also receive real time flight status and alerts.