| Business | Phone |
| Pioneer Technologies Llc Kirkwood 63122 | (314) 835-0300 |
| Peacock Computer Systems 1379 Andrew Dr, Kirkwood 63122 | (314) 821-7620 |
| Novasource 12166 Old Big Bend Rd # 107, Kirkwood 63122 | (314) 821-9100 |
| Ladera Technology Kirkwood 63122 | (314) 775-0000 |