| Business | Phone |
| Gata Tel Info Solutions 320 Saint Paul St, Baltimore 21202 | (410) 244-6463 |
| Hawkins Information Technology 1013 Chestnut Moss Ct, Baltimore 21226 | (410) 360-8775 |
| Information Systems Consulting 220 W Read St, Baltimore 21201 | (410) 528-1112 |
| Mohr Information Svc 110 E Lexington St, Baltimore 21202 | (410) 685-8888 |
| Nova Information Systems 16 S Calvert St, Baltimore 21202 | (410) 332-0007 |
| Olisys Inc 3500 Boston St # 322, Baltimore 21224 | (410) 327-9100 |