| Business | Phone |
| Dataking Inc 434 Crestover Cir, Richardson 75080 | (972) 699-8188 |
| Donovan Data Systems 1201 Richardson Dr, Richardson 75080 | (972) 480-8312 |
| Greatwall Data Systems 1475 Richardson Dr 21, Richardson 75080 | (972) 437-5172 |
| Mid-Southwest Data Systems 1701 N Greenville Ave 820, Richardson 75081 | (972) 669-8231 |
| Intec Consulting Inc 1904 Drew Ln, Richardson 75082 | (972) 644-8797 |