| Business | Phone |
| Bell Computer Svc 770 Cardinal Dr, Harrisburg 17111 | (717) 583-1800 |
| Computer Aid Inc 470 Friendship Rd # 300, Harrisburg 17111 | (717) 651-3000 |
| Cpi Technologies 2625 Walnut St, Harrisburg 17103 | (717) 214-5274 |
| Sentinel Technology Group Inc 3510 Derry St, Harrisburg 17111 | (717) 558-8100 |