23 : Guident Technologies Inc.
| Location: | Herndon, Va. |
| Annual growth rate: | 106.9% |
| 2008 revenue: | $30,738,922 |
| 2007 revenue: | $13,208,714 |
| 2006 revenue: | $7,335,911 |
| 2005 revenue: | $4,987,657 |
| 2004 revenue: | $1,678,345 |
| Leadership: | Teddy Matheu, Suneet Gupta, Boyd Harter, and Dan Ackerman |
| Number of employees: | 212 |
| Web site: | http://www.guident.com |