Founded in 1987 by Ken Morris and David Duffield, PeopleSoft was originally headquartered in Walnut Creek, California, before moving to Pleasanton, California. Duffield envisioned a client–server version of Integral Systems popular mainframe HRMS package. He cofounded PeopleSoft after leaving Integral Systems which was also based in Walnut Creek. It should not be confused with Integral Systems of Columbia, Maryland, a different company. The company's sole venture backing came from IBM. George J. Still Jr. from Norwest Venture Partners joined the Board of Directors.