Note: As this list was pulled from three years of app downloads, not all are compatible with every model of BlackBerry® smartphone. Click through the links to view compatible devices in the BlackBerry App World storefront.

Business Card Reader

Trading business cards at a conference or networking event? Where do they end up? With Business Card Reader for BlackBerry smartphones, they’ll end up right in your contacts. This app utilizes ABBYY text recognition technology and your smartphone’s auto-focus camera to interpret the text and load it into your address book.

CamCard

CamCard similarly captures business card information, and stores it within the app inside a virtual business card library, which is fully searchable and sports a great interface that also retains the original image of the card for identification.

Splashtop Remote Desktop HD

Head out on the road and retain full access to your PC or Mac desktop via Splashtop Remote Desktop HD for BlackBerry® PlayBook™ tablets. Notably, this remote desktop app supports the streaming of video and audio from your PC or Mac, as well as full application and file access.

e-Mobile Today Professional for BlackBerry

Take control into your own hands with this app for BlackBerry smartphones that allows you to craft a personalized dashboard filled with shortcuts and useful information. View appointments tasks, contacts, application shortcuts, and more – all with customizable views.

Remote Desktop for BlackBerry PlayBook

Another fantastic remote desktop app for BlackBerry PlayBook tablets, Remote Desktop allows you to access your Windows-based PC from across the Internet without sacrificing functionality. There is no need to install third-party software or server applications, as this app utilizes functionality built into recent versions of Microsoft® Windows™ operating systems.

BuzzOff – Best call blocker. Block unwanted calls and do not allow caller to leave a voicemail

This app allows you to control how your phone handles calls from unknown or private numbers, as well as from 1-800 numbers. You can also set up blocking settings straight from the call log, and set up advanced settings such as time delays for hanging up or blocking a call. Check the log file for a list of successfully blocked calls.

Remote Print

Print documents straight from your BlackBerry smartphone via a lightweight application available for installation on your desktop PC. The desktop application acts as a print server, while the app on your BlackBerry smartphone allows you to print documents from the file browser, email messages, and more. The connection is made over Wi-Fi®, and a BlackBerry Enterprise Server connection is supported allowing you to print to office printers.

Wi-Fi File Transfer

This app allows you to transfer files between your Mac or PC and your BlackBerry smartphone via fast Wi-Fi connection. Using a browser on your PC or Mac, you’ll have the ability to access the file system on your smartphone (including the SD card) and transfer media, documents, or other files. Best of all, the system utilizes a Wi-Fi connection, which means fast speeds and no data charges.

Contacts Cleaner

For those who like to stay organized, there’s nothing worse than a messy address book. Contacts Cleaner fixes this issue automatically, allowing you to scrub your address book for duplicate contacts, reducing clutter and automatically merging contacts to provide a complete picture.

Auto Lock

Auto Lock automatically blocks keyboard input when your backlight brightness times out. This prevents you from accidentally launching an application or sending out a pocket call, and can ultimately help preserve battery life by preventing such situations. You can customize the Auto Lock functionality to set a specific timeout, and to allow certain types of apps to remain usable as exceptions. A “Slide to unlock” style interface appears when input is blocked by the app.

There we have it! If you haven’t had a chance to check out one or more of these apps, head over to BlackBerry App World now to load them onto your BlackBerry smartphone or BlackBerry PlayBook tablet. I’m sure that you have more ideas than what I’ve shared here – get down to that comment box and enlighten us!