49 : OakTree Enterprise Solutions Inc.
| Location: | Reston, Va. |
| Annual growth rate: | 62.1% |
| 2008 revenue: | $5,933,512 |
| 2007 revenue: | $4,150,396 |
| 2006 revenue: | $3,072,438 |
| 2005 revenue: | $1,684,877 |
| 2004 revenue: | $858,947 |
| Leadership: | David A. Ferguson, President and CEO |
| Number of employees: | 75 |
| Web site: | http://www.oaktreesolutions.com |