A sprawling firm with 95 agents, Keller Williams Realty stresses independent contracting—each agent is his or her own boss—and the importance of personal experience. Copies of The Millionaire Real Estate Investor, written by founder Gary Keller, line this company's front desk as an homage to the firm's belief in shared success with its clients. While this particular office has been located in the midst of Long Ridge Road and Washington Boulevard for 10 years, the firm has risen to the third ranking in the real estate industry.