| Business | Phone |
| Alltech Computer Source 5266 Mohican Way, Antioch 94531 | (925) 778-9463 |
| Computer Support Source 2716 Lobelia Ct, Antioch 94531 | (925) 776-4776 |
| K & R Technology 1852 Crown Peak Way, Antioch 94531 | (925) 778-7224 |
| Scw Computer Svc Corp 5041 Carbondale Way, Antioch 94531 | (925) 756-5565 |
| Suchita Interactive 2518 Taylor Way, Antioch 94531 | (925) 522-8028 |