| Business | Phone |
| Data Specialists Inc 258 E Arapaho Rd 180, Richardson 75081 | (972) 437-4661 |
| Dolphin Information Solutions 911 E Arapaho Rd, Richardson 75081 | (972) 671-7300 |
| Envoy Corp 275 W Campbell Rd 205, Richardson 75080 | (214) 349-4929 |
| Omi Intl Inc 1600 Promenade Ctr # 12, Richardson 75080 | (972) 231-0484 |
| Perot Systems Corp 1100 E Campbell Rd, Richardson 75081 | (972) 761-0606 |
| Shared Medical Systems 800 E Campbell Rd, Richardson 75081 | (972) 783-6737 |