Most widely used, top rated BlackBerry Apps:
These are the top 10, most popular apps for BlackBerry according to the BlackBerry App world as of October 2011. And as is human nature, these also comprise a list of completely free BlackBerry apps which makes them a very attractive set of apps one should consider downloading.
1. 
BlackBerry Messenger (BBM)
The BlackBerry Messenger app (BBM to the BB community) is currently the most popular and rated app for the BlackBerry at the moment. Being collaborated into many new BlackBerry apps, this is the app to have. Find a restaurant with your friends, chat while surfing the web or playing a game. BBM is sure to be the most integrated app for any BlackBerry user to have. Messaging and the most recent picture/ file transfer are restricted in BB platform but is virtually free over the BIS network.
2. 
Facebook
One of the most popular social networking platforms is also available on your BlackBerry. Sporting many more features than conventional mobile applications, Facebook for BlackBerry allows you to create and review chats and messages directly from the BlackBerry chat list. Another fully integrated app for social networking, utilising the BIS network and enhanced Wi-Fi support. This also allows Facebook chat, for on the go chatting to your contacts.
3. 
Photo Studio
A free photo editing app, that is suitable for both the newbie to experienced users to edit images on the go. With powerful image processing, Photo Studio offers an easy to use interface that allows various effects and editing options. One can even combine multiple effects from base operations such as: brightness, contrast, hue and saturation; with other effects like: Greyscale, Sepia, Rainbow and Mystique. Most of the effects come pre-loaded, but there are more advanced ones available at a price. All in all, a very useful BlackBerry app to have.
4. 
Windows Live Messenger
The popular IM app from Windows that allows the users to instantly connect and chat with your IM contacts, without having to be in front of a computer. Access your existing WLM contact list or you even add new ones, delete old ones and block potential nuisances. Featuring a list of new emoticons to express yourself graphically as well as the ability to participate not only in multiple chats, but also multi user chats.
5. 
Twitter
Tweet straight from your BlackBerry mobile phone. Sporting a lighter color scheme, and the ability to show or hide the tweet composer, allows one a rich feature Twitter experience. Share and discover new trends and topics on the go. Send and receive relevant information, hot off the press.
6. 
Flashlight
Another popular, and more practical app, is Flashlight. Flashlight allows you to transform your BlackBerry into a handy torch. Use your cameras built in flash to illuminate a room, or create a more subdued effect by using the LED display to create a more subtle light. Being an entirely free, full version app, without any pestering ads, Flashlight definitely is a handy app to have.
7. 
crunchSMS
Tired of the boring old SMS features? Looking for ways to be more bold and creative? crunchSMS offers many new features including chat-style bubbles, “emoji” icons, signatures, blacklisting and tons of customizations. A replacement that is very simple to use for the built in messaging application available for BlackBerry.
8. 
Who is it? Color LED alerts
With this little handy app, you can customize the colors of the front LED on your BlackBerry. Red for your boss, green for your friends, blue for family and yellow for that unknown number. You just need to decide and express yourself. Create different color associations for 4 different colors. Then you can tell at a glance who is calling and allow you to decide whether or not to take the call. The handiest Caller ID app you will ever need.
9. 
WhatsApp
Now you can get in touch with your friends, regardless of which platform they are using – iPhone’s iOS, BlackBerry, Android and even Nokia. Whatsapp automatically scans your contact list, so there is no need to setup or invite contacts. Chat, send photos, videos, location and even voice notes. The first year is completely free, after which a fee applies.
10. 
Poynt
Find businesses, people, restaurants, movies, events and weather information. Find their phone numbers, browse their websites and get map directions all with just a simple click. However this feature is limited to a list of countries which include Canada, USA, UK, France, Germany, Spain, Italy, India and Australia.
