| Business | Phone |
| Carbon Copy Inc Sonora 95370 | (209) 533-0300 |
| Gdi Computer Svc 14659 Mono Way, Sonora 95370 | (209) 536-9705 |
| Shea's Sierra Computer Systems Sonora 95370 | (209) 743-7347 |
| Titan Technology Svc Inc 610 S Washington St # C, Sonora 95370 | (209) 533-8333 |