| Business | Phone |
| Performance Software Group Inc 12 Hillview Dr, Catonsville 21228 | (410) 788-4476 |
| Schauer & Assoc 1300 Summit Ave # 1w, Catonsville 21228 | (410) 747-3100 |
| Softtech Animation Inc Catonsville 21228 | (410) 747-5320 |
| Analytical Computing 602 Saint Johnsbury Rd, Catonsville 21228 | (410) 788-8217 |
| Ballenger Creek Software Inc 13 Franklin Tree Ct, Catonsville 21228 | (410) 788-3197 |
| Cpsi 21 Mellor Ave, Catonsville 21228 | (410) 455-0005 |
| R D Davis Catonsville 21228 | (410) 744-4900 |
| Eco Integration 5602 Baltimore National Pike, Catonsville 21228 | (410) 719-0179 |
| Jhenn System Inc 1913 Rockwell Ave, Catonsville 21228 | (410) 869-8597 |
| Techno Lutherans Po Box 3296, Catonsville 21228 | (410) 788-6369 |