Research In Motion Limited (RIM. TSX: RIM, NASDAQ: RIMM) is a Canadian wireless device company. It is best known as the developer of the BlackBerry handheld communication device.

RIM is headquartered in Waterloo, Ontario, and is a sponsor of RIM Park in the north of the city. It was founded by Mike Lazaridis, who currently serves as its co-CEO along with Jim Balsillie.

Prior to the manufacture of the BlackBerry, RIM worked with RAM Mobile Data and Ericsson to turn the Ericsson developed Mobitex wireless data network into a two-way paging and wireless e-mail network. Pivotal in this development was the release of the Inter@ctive pager 950, which started shipping in August, 1998. About the size of a bar of soap, this device competed against the SkyTel two-way paging network developed by Motorola.

The first BlackBerry was released in early 1999, using the same hardware as the Inter@ctive pager 950, and running on the Mobitex network. The first BlackBerry integrating a cell phone, as well as the first BlackBerry sold outside of North America was released in 2001, using the European GSM / GPRS standard.

Since then, RIM has released a variety of devices running on GSM, CDMA, and Motorola iDEN networks. The ubiquity of these BlackBerry devices in the corporate environment and the compulsive use of its ability to quickly send and receive email has earned it the nickname "Crackberry".

RIM develops its own software for its devices, using C++ and Java technology. RIM also develops and sells embedded wireless data components