The 2008 Inc. 5,000: The fastest-growing private companies in America

Spillman Technologies – Salt Lake City, UT
No. 4,540

Year – 2008
Industry – Software
Founded – 1978
Growth – 54.4%
2004 Revenue – $19.3 million
2007 Revenue – $29.8 million
Employees – 171
Web site – www.spillman.com

What it does:
Provides software that automates the management of public-safety agencies, including fire and police departments, sheriffs' offices, and courts.

Why it's growing:
More than half of the company's new customers in 2007 came from referrals from existing customers.

What's noteworthy:
The company will release a major revision of its software with a new user interface this year.