The world's largest technology company, HP holds the #5 spot in the Best Global Green Brands ranking. HP is honored as a member of The Civic 50, a comprehensive ranking of S&P 500 companies that best use their time, talent, and resources to improve the quality of life in the communities where they do business. Stanford University classmates Bill Hewlett and Dave Packard founded HP in 1939. The company's first product, built in a Palo Alto garage, was an audio oscillator - an electronic test instrument used by sound engineers. One of HP's first customers was Walt Disney Studios, which purchased eight oscillators to develop and test an innovative sound system for the movie Fantasia.