| Business | Phone |
| Calmon Inc 4560 Belt Line Rd, Addison 75001 | (972) 308-9998 |
| Engineering Consulting Svc 4950 Keller Springs Rd, Addison 75001 | (972) 392-2153 |
| Konsult Europe 16475 Dallas Pkwy, Addison 75001 | (972) 690-5388 |
| Technology Strategies & Allncs 15301 Dallas Pkwy 840, Addison 75001 | (972) 458-5510 |