| Business | Phone |
| United Technology Institute 9047 Gaither Rd, Gaithersburg 20877 | (240) 631-1734 |
| Computer Tutor 16128 Orchard Grove Rd, Gaithersburg 20878 | (301) 963-6033 |
| Dena Corp 507 N Frederick Ave, Gaithersburg 20877 | (301) 519-9260 |
| Design Desk Gaithersburg 20877 | (301) 840-8439 |
| Netmasters Inc 102 Chestnut St, Gaithersburg 20877 | (301) 840-5922 |
| Information Technology Inst Gaithersburg 20877 | (301) 593-6462 |