AMD
Nvidia
3dfx
Matrox
Intel
Asus
Micro-Star International
Gigabyte Technology
Sapphire Technology
Silicon Integrated Systems
S3 Graphics
Silicon Graphics
Commodore International
Canadian technology corporation
ati.com
ATI Technologies Inc., commonly called ATI, was a Canadian semiconductor technology corporation based in Markham, Ontario, that specialized in the development of graphics processing units and chipsets. Wikipedia