The 10 Largest Inc. 5000 Companies

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5. Westcon Group

CEO: Dean Douglas
Rank: #4,716
Three-Year Growth: 44.1 percent
2012 Revenue: $3.8 billion

Founded in 1985, Westcon Group distributes technology products from companies such as Cisco that are primarily related to networking, security, and datacenters. "With each of the companies that we represent we are either the number one or number two distributor globally of their products,” says Dean Douglas, CEO of the Tarrytown, New York-based company. “This creates a very strong relationship between the two companies and allows us to be very skilled and savvy when we bring their products to market.”