Also called "Chat Programs". These applications are installed on a PC by a user, and allow immediate "chats" between other users of the program. Some of these programs also allow audio or video conferencing as well as the ability to execute file transfers.
Comment
BlackBerry smartphones support the following instant messaging applications2 when integrated with BlackBerry?? Enterprise Server.
* BlackBerry?? Messenger
* IBM?? Lotus?? Sametime??
* Microsoft?? Office Communications Server 2007
* Microsoft?? Office Live Communications Server 2005
* Novell?? GroupWise?? Messenger
