| Business | Phone |
| Comsys Information Technology 111 S Calvert St # 1560, Baltimore 21202 | (410) 385-5628 |
| Opti Mark Corp Baltimore 21220 | (410) 529-2141 |
| Perfect Complement 4979 Mercantile Rd, Baltimore 21236 | (410) 931-8133 |
| Diversified Computer Conslnts 300 W Pratt St # 300, Baltimore 21201 | (410) 752-8511 |
| Diversified Computer Inc 300 W Pratt St, Baltimore 21201 | (410) 752-8593 |
| Ajilon Consulting 210 W Pennsylvania Ave # 650, Baltimore 21204 | (410) 821-0435 |
| Research Computing Co 613 Stoney Spring Dr, Baltimore 21210 | (410) 243-7855 |
| Sage Enterprises 6812 Maurleen Rd, Baltimore 21209 | (410) 653-2199 |