| Business | Phone |
| Vista Engineering 4405 Canton Hwy, Cumming 30040 | (770) 844-8868 |
| King Of Kings 7225 Jonsway, Cumming 30041 | (770) 888-2764 |
| Campbell & Paris Engineers 4215 River Park Ct, Cumming 30041 | (678) 513-1600 |
| Inteworx.Net 6170 Parkway North Dr, Cumming 30040 | (770) 886-3227 |