Features

• Send and receive messages ( unlimited character length)
• Add friends by either BlackBerry pin or personal  barcode
• Share your pictures, videos and more with multiple contacts at the same time
• Create groups based on friends, family or colleagues
• See what your contacts  are listening to on their BlackBerry

System Requirements

To use BlackBerry Messenger, you’ll need the following items:

• A data plan from your wireless provider
• BlackBerry Device Operating System v4.5 +
• 2.4 MB of available memory on your device
• 64 MB of memory BlackBerry device

Notes:  While the BlackBerry Messengers limits you to only chatting with your friends that have BlackBerry device, it’s still a pretty solid way to stay in contact with your friends. Maybe they team up with other messengers clients and great a all in one BBM client. I’m sure we’ll see other features soon with new releases.

OTA Download link: BlackBerry Messenger Download here

Stay in contact with your GMAIL friend with GTALK CHAT by Google. The GTALK messenger client is available for BlackBerry.

OTA Download link: Google Talk (GTALK)  Messenger Download here

Features

• Windows Live Messenger you enjoy on your desktop now on your BlackBerry.
• Chat with multiple contacts
• Send and receive pictures

System Requirements

To use Windows Live Messenger, the following is required:

• A wireless data plan from your wireless provider
• A Windows Live ID, MSN ID or Microsoft® Passport account.
• BlackBerry handheld OS v4.2+
• BlackBerry Enterprise Server (BES) compatible.  Your BES Administrator must have IT Policy set to allow Windows Live Messenger functionality.

OTA Download link: Google Talk (GTALK)  Messenger Download here Read more…