Revenue: $2 billion
Three-year growth: 1,313 percent
Location: Irvine, California
William Wang's company has become a major player in the world of flat-panel TVs. "The company is not me, it's many people's efforts," Wang told Inc. in 2007. "And it's not just all about work--it's being able to appreciate one another."
Revenue: $1.1 billion
Three-year growth: 1,024.3 percent
Location: Las Vegas
This company brokers real estate and manages property in Nevada and Arizona.
Revenue: $854.9 million
Three-year growth: 5,883 percent
Location: South Jordan, Utah
This multilevel marketing company took off beginning in 2005 when founder Dallin Larson (above) started to sell açai berry juice, priced at $40 a bottle.
Revenue: $825.6 million
Three-year growth: 1,014.3 percent
Founded in 2004 by (from left to right) Lisa Holliday, Rob Snyder, Pierre Koshakji, and Chris Domhoff, this company provides gas and electric power to customers in Texas and Georgia.
Revenue: $439 million
Three-year growth: 722 percent
Location: Plymouth, Minnesota
This company manages the natural-gas, electricity, and alternative-fuel systems of large energy consumers, including utilities, retailers, and food processors.
Revenue: $347.5 million
Three-year growth: 854.2 percent
Location: Reston, Virginia
Primarily a government contractor, Carahsoft delivers software, hardware, and IT services to its clients.
Revenue: $331 million
Three-year growth: 966.4 percent
Location: Boca Raton, Florida
Sex does in fact sell. This company publishes Penthouse magazine and operates a number of niche websites, including many that are strictly for adults only.
Revenue: $270.7 million
Three-year growth: 917.2 percent
Location: Swartz Creek, Michigan
Founded in 1973, this company fills prescriptions for patients with acute and chronic conditions and operates disease-specific management programs. Phil Hagerman (above) serves as president and CEO.
Revenue: $265.6 million
Three-year growth: 583.3 percent
Location: Blue Bell, Pennsylvania
This company installs fiber-optic cable for telecom companies and handles installation for cable and satellite TV providers. C. Scott Hisey (above) is UniTek's CEO.
Three-year growth: 2,645.4 percent
Location: San Diego
Led by CEO Andrew S. Clark (above), Bridgepoint Education offers online degrees through two universities. The company went public in April.