| Business | Phone |
| Winpisinger & Assoc 12329 Needlepine Ter, Silver Spring 20904 | (301) 947-0278 |
| Universal Automation Labs Inc 8380 Colesville Rd, Silver Spring 20910 | (301) 565-0032 |
| Automated Sciences Group Inc 8701 Georgia Ave, Silver Spring 20910 | (301) 588-0996 |
| Social & Scientific Systs Inc 8757 Georgia Ave # 12, Silver Spring 20910 | (301) 986-4870 |
| Com Pac Inc 14515 Cutstone Way, Silver Spring 20905 | (301) 989-0200 |
| R S Data Systems 302 E Indian Spring Dr, Silver Spring 20901 | (301) 495-7323 |
| R S Data Systems Inc 9416 Curran Rd, Silver Spring 20901 | (301) 439-2993 |
| Data Prompt Inc 11911 Tech Rd, Silver Spring 20904 | (301) 622-0450 |
| Data Transformation Corp 8300 Colesville Rd, Silver Spring 20910 | (301) 587-4580 |
| Nationwide Central Intake Fcty 1110 Bonifant St # 220, Silver Spring 20910 | (301) 585-2391 |
| Health Management Systems 1808 Chapel Hill Rd, Silver Spring 20906 | (301) 438-1448 |