BeejiveIM (BlackBerry) is the most reliable and user-friendly mobile IM application on the market for BlackBerry devices, featuring desktop-like instant messaging and always-on efficient networking.
Works with AIM/iChat/MobileMe, MSN/Windows Live, Yahoo!, Facebook Chat, MySpace, GoogleTalk, ICQ, & Jabber
Pop Later schedules your BBM chat message at a later time. Forget the hassle of trying to remember who, when and what to send a BBM chat message. Pop Later pops up the BBM chat screen of your selected contact with the time you specified
GroupMe for BlackBerry is the best way to chat with everyone you know. It's absolutely free, whether you are talking to a group of friends, or texting with one person. Best of all, it works on nearly every kind of phone, via push or SMS. With GroupMe, it's easy to reach anyone, anytime, anywhere
The Vayusphere XMPP Messenger solution for BlackBerry provides a robust, reliable Instant Messaging solution for your wireless needs. Vayusphere XMPP Messenger solution inter-operates with all standards compliant XMPP/Jabber servers and has been deployed at over 200 companies and thousands of devices
FriendChat - Chat with your Facebook friends from your BlackBerry device using FriendChat (formerly known as FaceChat).
FriendChat includes features that no other chat for FaceBook app has:
· BBM Integration, send your chat screen to any of your BBM contacts (requires BBM 6.0).
· Emoticons - send emoticons with your Facebook chats
Past Chat Free - ***If You Like This App Please Give us a Review in BlackBerry® App World™****
With Past Chat you can email your BlackBerry Messenger Chat History to you email address in an easy to read excel file format
Startel Secure Messaging - The Startel Secure Messaging App provides users with the ability to send and receive secure encrypted messages to and from computers and/or other mobile devices within the Startel network