| Business | Phone |
| Interpro Inc 3265 Orchard Lake Rd, Keego Harbor 48320 | (248) 738-1590 |
| Lakeside Software Inc 1660 Cass Lake Rd, Keego Harbor 48320 | (248) 738-1119 |
| Kwik Computer Svc Inc 2111 Orchard Lake Rd, Keego Harbor 48320 | (248) 322-8980 |
| Lakeside Software Inc 112 5th St S, Keego Harbor 39701 | (662) 327-3340 |