Arlington; 38 employees
This small software firm has big clients—Raytheon, KPMG, Penn State—who use its core product, a chat-based engagement platform. It also has big plans: It has hired 16 people so far this year, and revenues increased by 150 percent in the last 12 months. Employees tell us they like all the opportunity such growth presents as well as the firm’s transparency—everyone, including the CEO, sits in an open office. The energy is further fueled by staff outings (Ultimate Frisbee, go-karting) and lots of free snacks. (Warning: Some staffers are on a beef-jerky kick.)
Perk: Unlimited sick leave.