| Business | Phone |
| Alliance Technology Group 7240 Parkway Dr # 140, Hanover 21076 | (410) 712-0270 |
| Applied Network Taechnologies 2657 Old Annapolis Rd # G, Hanover 21076 | (410) 381-3390 |
| Nisus Technologies Co 7526 Connelley Dr, Hanover 21076 | (410) 766-1100 |
| Unisys Corp 7466 New Ridge Rd, Hanover 21076 | (410) 694-4342 |