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Rich Client Platform, a software development platform helping software developers to rapidly build new Java applications

RCP (chip), a co-processor chip designed by Silicon Graphics for use in the Nintendo 64 gaming system

rcp (Unix), a command on the Unix operating systems that is used to remote copy a file

Radio Control Protocol, an IP based protocol

Rapid Control Prototyping, a method which is used to optimize electronic control systems

Royal College of Physicians, located in London, Edinburgh, and Glasgow

Revolutionary Communist Party

RealClearPolitics, a political website