Mentor initially wrote software that ran only in Apollo workstations. The company raised $55 million in funding through an initial public offering in 1984. Siemens EDA was founded as Mentor Graphics in 1981 by Tom Bruggere, Gerry Langeler, and Dave Moffenbeier, all formerly of Tektronix. The company leveraged Apollo Computer workstations to differentiate itself within the computer-aided engineering (CAE) market with its software and hardware. The company distributes products that assist in electronic design automation, simulation tools for analog mixed-signal design, VPN solutions, and fluid dynamics and heat transfer tools. Founded in 1981 as Mentor Graphics, the company was acquired by Siemens in 2017. Siemens EDA is a US-based electronic design automation (EDA) multinational corporation for electrical engineering and electronics, headquartered in Wilsonville, Oregon.