| Business | Phone |
| F 1 Help Computer Training Svc 3195 Old Washington Rd, Waldorf 20602 | (301) 396-5222 |
| Pro Builders Computer Training 5375 Woodgate Ln, Waldorf 20601 | (301) 893-2336 |
| Professional Network Solutions 3460 Old Washington Rd # 301, Waldorf 20602 | (301) 392-5000 |
| Skill Soft 2741 Hale Ct, Waldorf 20603 | (301) 870-9101 |