ANSYS, Inc. (ANSS)
ANSYS, Inc. develops and markets engineering simulation software and services worldwide.
Cadence Design Systems, Inc. (CDNS)
Cadence Design Systems, Inc. provides software, hardware, services, and reusable integrated circuit (IC) design blocks worldwide.
Synopsys, Inc. (SNPS)
Synopsys, Inc. provides electronic design automation software products used to design and test integrated circuits.