Crossover (genetic Algorithm) , in genetic algorithms, refers to an analogue process to genetic crossover in a computer program
Crossover (music) , music that has commercial success in a genre other than that it was originally aimed at
Crossover (physics) , the variation of the exponent in power-law when varying two different parameters close to a critical point where the power-law becomes singular
Crossover (rail) , a pair of rail switches that allows trains to switch between parallel tracks
CrossOver Office is a commercial program derived from Wine by CodeWeavers that allows some Windows-based applications to run on Linux and (forthcoming) Apple Mac OS X without the installation of Microsoft Windows.
Crossover (sports) , a sports play where a rushing ball or puck carrier switches places with a teamate in flight, potentially confusing opposing players
Crossover SUV , a car-based SUV (rather than truck-based)
Crossover Dribble , a move in basketball in which you make the defender go in the wrong direction by dribbling the ball around, across your body, or in between your legs
Crossover Cable , an Ethernet cable in which the transmit and receive pairs are swapped at one end, used to directly connect two devices