| Business | Phone |
| Anasys 10450 Shaker Dr # 113, Columbia 21046 | (410) 740-5223 |
| Economatrix International 6604 Sewells Orchard Dr, Columbia 21045 | (410) 290-7838 |
| Exeter Assoc Inc 5565 Sterrett Pl, Columbia 21044 | (410) 992-7500 |
| Matrix Economic & Financial Columbia 21044 | (410) 997-4535 |
| One Group Inc Columbia 21045 | (410) 964-1672 |