Answer: emulator

AnswerCrossword Clue
EMULATORCopy cat
EMULATORComputer program, perhaps
EMULATORCopier
EMULATORRival.
EMULATORRival of a sort
EMULATORMimic, in computerese
emulatorone that emulates (to try to equal or surpass)
emulatorto imitate in an effort to equal or surpass