Through the long history of PPD the companies we performed development work for is a "who's who" of the graphics world. This work varied from doing entire development of drivers for OpenGL and D3D to tuning drivers developed by other 3D party developers or internal teams to make the products more competitive.
Sadly, many of the companies we have had the honor to do work for have been acquired, are no longer in the graphics business or even in existence but here are a few of the company logos we have had the honor to provide services for: