Mentor Graphics, Inc is a US-based multinational corporation dealing in electronic design automation for electrical engineering and electronics. In 2004 it was ranked third in the EDA industry it helped create. Founded in 1981, the company is headquartered in Wilsonville, Oregon and employs roughly 5,200 people worldwide with annual revenues of around $1 billion. In 1981, the idea of computer-aided design for electronics as the foundation of a company occurred to several groups - those who founded Mentor, Valid Logic Systems, and Daisy Systems. One of the main distinctions between these groups was that the founding engineers of Mentor, whose backgrounds were in software development at Tektronix, ruled out designing and manufacturing proprietary computers to run their software applications. They felt that hardware was going to become a commodity owned by big computer companies, so instead they would select an existing computer system as the hardware platform for the Computer Aided Engineering programs they would build.
Synopsys, Inc., an American company, is the leading company by sales in the Electronic Design Automation industry. Synopsys' first and best-known product is Design Compiler, a logic-synthesis tool. Synopsys offers a wide range of other products used in the design of an application-specific integrated circuit. Products include logic synthesis, behavioral synthesis, place and route, static timing analysis, formal verification, HDL simulators as well as transistor-level circuit simulation. The simulators include development and debugging environments which assist in the design of the logic for chips and computer systems.