| Business | Phone |
| Advocate Pc Svc & Support 4912 Fountain Ave, St Louis 63113 | (314) 367-5445 |
| Sirius Computer Solutions City Place Two, St Louis 63141 | (314) 812-4770 |
| Mac Head Quarters 3001 S Hanley Rd, St Louis 63143 | (314) 647-6647 |
| K B Barmann Bus & Computer Svc 8460 Watson Rd, St Louis 63119 | (314) 843-7277 |
| Efficient Computer Svc Llc 8460 Watson Rd, St Louis 63119 | (314) 525-2533 |
| Elzemeyer Consulting 2001 S Hanley Rd # 520, St Louis 63144 | (314) 781-1800 |
| Cat Computer Solutions 7915 Big Bend Blvd, St Louis 63119 | (314) 968-1880 |
| Compuware Corp 3 Cityplace Dr # 500, St Louis 63141 | (314) 989-0080 |