The Hercules Graphics Card included a "Centronics compatible" parallel printer port, the same as the IBM Monochrome Display and Printer Adapter board that the card was based on. The company also produced CGA compatible cards, and with the unsuccessful Hercules InColor Card, it tried to go head-to-head with the Enhanced Graphics Adapter (EGA). After low sales with InColor, Hercules stopped making its own graphics core and bought graphics chipsets from other manufacturers.

The company name gradually declined through the 1990s while graphics chipset firms such as S3 Graphics, Cirrus Logic, and ATI Technologies grew rapidly. In 1998, Hercules Computer Technology was acquired by Guillemot Corporation, a French video game peripheral manufacturer.

Hercules Computer Technology played an important role in the development of the PC industry. The company's graphics cards were widely used in early PCs, and its standards were influential in the development of the VGA standard.

Here are some of the notable products released by Hercules Computer Technology:

• Hercules Graphics Card (HGC) (1983)
• Hercules Graphics Card Plus (HGC+) (1984)
• Hercules InColor Card (1987)
• Hercules Terminator 8514/A (1991)
• Hercules Stingray (1993)
• Hercules Thriller 3D TH2318SGA Rendition Vérité v2200, AGP, 8MB SGRAM, Video In & Video Out (1998)

Hercules Computer Technology was a pioneer in the PC graphics industry, and its products helped to shape the development of the PC.