On August 31, 1994, Aldus Corp. and Adobe Systems Inc. finalized their merger. The two companies hoped to combine forces in creating powerful desktop publishing software, building on the field Aldus founder Paul Brainerd had created in 1985 with his PageMaker software. Pagemaker was one of three components to the desktop publishing revolution. The other two were the invention of Postscript by Adobe and the LaserWriter laser printer from Apple. All three were necessary to create a desktop publishing environment.