| Business | Phone |
| Dell Computer Corp 2401 Greenlawn Blvd, Round Rock 78664 | (512) 255-1568 |
| Sigmatrak 110 E Main Ave, Round Rock 78664 | (512) 244-9515 |
| Cdcst Inc 400 Greenlawn Blvd, Round Rock 78664 | (512) 341-2327 |
| Jfton America Inc 800 Paloma Dr, Round Rock 78664 | (512) 248-8007 |
| Catalyst International 555 Round Rock West Dr, Round Rock 78681 | (512) 244-7409 |