22. Connection

2016 Rank: 21

Top Executive: Timothy McGrath, President & CEO

Location: Merrimack, N.H.

www.pcconnection.com

Formerly PC Connection, the company shortened its name last September to better reflect its capabilities, which cover everything from the data center and networking to software and security. In its most recent quarter, Connection said net sales in its SMB business grew 5 percent, while revenue from public sector customers soared 30 percent.