| Business | Phone |
| Sytex Inc 1711 E Central Texas Expy, Killeen 76541 | (254) 618-5900 |
| Tantau Software Inc 110 Wild Basin Rd-/160, Killeen 76541 | (254) 554-4000 |
| Computing Technologies Inc 2201 S W S Young Dr 104c, Killeen 76543 | (254) 628-5450 |
| Compuzone 2201 S W S Young Dr 101, Killeen 76543 | (254) 616-1995 |
| Ewa Services Inc 3400 E Central Texas Expy 101, Killeen 76543 | (254) 699-4023 |
| Ewa Svc Inc 1711 E Central Texas Expy, Killeen 76541 | (254) 200-9047 |