| Business | Phone |
| Enterprise Engineering Inc 2223 Maryland Ave, Baltimore 21218 | (410) 243-4862 |
| Computerized Management Svc 404 Reisterstown Rd, Baltimore 21208 | (410) 653-3394 |
| Dataplus 1498m Reisterstown Rd # 215, Baltimore 21208 | (410) 466-5500 |
| Lynai Data Inc 7982 Honeygo Blvd, Baltimore 21236 | (410) 238-1401 |