| Business | Phone |
| Autosearch Inc 318 Statewood Dr, Ballwin 63021 | (636) 391-8484 |
| Wellspring Software 445 Sovereign Ct, Ballwin 63011 | (636) 527-7550 |
| New World Systems 603 Dougherty Terrace Dr, Ballwin 63021 | (636) 527-5710 |
| Medtech 180 S Weidman Rd # 125, Ballwin 63021 | (636) 207-0277 |
| Instar Corp Ballwin 63011 | (636) 256-8522 |
| Conley & Assoc Inc 930 Kehrs Mill Rd # 325, Ballwin 63011 | (636) 230-0062 |
| Data Tec Inc Po Box 31576, Ballwin 63011 | (636) 256-7401 |