BlackBerry is a handheld device made by RIM (Research In Motion) that competes with another popular handheld, the Palm, and is marketed primarily for its wireless e-mail handling capability. Through partners, BlackBerry also provides access to other Internet services. Like the Palm, BlackBerry is also a personal digital assistant (PDA) that can include software for maintaining a built-in address book and personal schedule. In addition, it can also be configured for use as a pager.
Exploiting the trends toward worker mobility and the growth in e-mail traffic, BlackBerry's makers provide software that forwards a user's incoming mail from the user's individual e-mail account or to a user's corporate e-mail address through a customer-selected wireless network to the BlackBerry where it is stored for reading. Outgoing e-mail goes directly to the addressee from the BlackBerry but a copy of the e-mail also goes to the user's home e-mail box. Software is also provided for synchronizing address books and schedules with the desktop system.

Compared to the Palm, the BlackBerry is somewhat simpler and offers fewer options and applications. Its unnamed operating system apparently takes up a relatively small space on its 4 megabyte flash memory, which is also used to store user data. Unlike the Palm, whose users write text using a stylus, BlackBerry offers a tiny keyboard that some users say is faster to use in spite of its size. BlackBerry comes in two configurations, one with a slightly larger LCD display.