Competitors

Compaq originally competed directly against IBM, manufacturing computer systems equivalent with the IBM PC, as well as Apple Computer. In the 1990s, as IBM's own PC division declined, Compaq faced other IBM PC Compatible manufacturers like Dell Computer, Packard Bell, AST Research, and Gateway 2000.

By the mid-1990s, Compaq's price war had enabled it to overtake IBM and Apple, while other IBM PC Compatible manufacturers such as Packard Bell and AST were driven from the market.

Dell became the number-one supplier of PCs in 2001.

At the time of their 2002 merger, Compaq and HP were the second and third largest PC manufacturers, so their combination made them number one. However, the combined HP-Compaq struggled and fell to second place behind Dell from 2003 to 2006. Due to Dell's struggles in late 2006, HP has led all PC vendors from 2007 to 2012.

During its existence as a division of HP, Compaq primarily competed against other budget-oriented personal computer series from manufacturers including Acer, Lenovo, and Toshiba. Most of Compaq's competitors except Dell were later acquired by bigger rivals like Acer (Gateway 2000 and Packard Bell) and Lenovo absorbing IBM's PC division. Lenovo has been the PC world leader from 2013 onwards.