ZyMOS Corporation was a semiconductor manufacturing company located in Sunnyvale, California. ZyMOS mainly designed and produced VGA integrated circuits.
On 1987 ZyMOS introduced a POACH (PC-On-A-Chip) 82x3x multifunction peripheral series, a virtually first chipset for cloning IBM AT. Intel soon licensed this chipset to support Intel 80286 sales.
ZyMOS changed its name to Appian Technology Inc. on November 1, 1990. This change was an object of derision in the Cluetrain Manifesto, due to the use of buzz words and lack of substance in the announcement.