| Business | Phone |
| Courtland Software Svc Inc 8547 Meadowrock Dr Ne, Rockford 49341 | (616) 874-1230 |
| Dealer Data Integration Inc Rockford 49341 | (616) 863-0909 |
| Ibm 6893 Vista De Oro Dr Ne, Rockford 49341 | (616) 874-3001 |
| Intervoice-Brite 6076 Pickerel Dr Ne, Rockford 49341 | (616) 874-2097 |
| Livingstone Technologies 11555 Edgerton Ave Ne, Rockford 49341 | (616) 863-5919 |