HP RIVAL is a term used to refer to the three major competitors of HP in the computer industry: DELL, ACER, and IBM. DELL is a multinational computer technology company based in the United States that develops, sells, repairs, and supports computers and related products and services. ACER is a Taiwanese multinational hardware and electronics corporation specializing in advanced electronics technology. IBM is an American multinational technology company that manufactures and markets computer hardware, middleware, and software, and offers hosting and consulting services in areas ranging from mainframe computers to nanotechnology.