A forex range option product with a payout equal to double the initial premium for each of four ranges an exchange rate stays within for a sequence of four periods of three to six months each. The maximum payout can be eight times the initial premium if the exchange rate is within each sequential range for the prescribed period.

A series of four wheel drive road / rally cars by Audi.

a battery powered, programmable four Watchwinder with a built-in suede lined, fine-grained storage drawer for six additional watches mounted on padded cushions

A spreadsheet program originally developed by Borland but subsequently sold to a series of owners. Quattro uses the Borland Database Engine.