| Business | Phone |
| Graytech Systems 2713 Marietta Hwy 222, Dallas 30157 | (770) 422-8546 |
| Crouse Computer Consulting 679 Marshall Fuller Rd, Dallas 30157 | (770) 445-4464 |
| Advanced Computer Systems Inc 2911 Buchanan Hwy, Dallas 30157 | (770) 443-9334 |
| Advantage Programming Concepts 3150 Due West Rd, Dallas 30157 | (770) 505-0075 |