| Business | Phone |
| Add Mem 19964 Lorena Cir, Castro Valley 94546 | (510) 537-0578 |
| Apogee Consulting Po Box 20532, Castro Valley 94546 | (510) 537-1711 |
| Eathink Inc Castro Valley 94546 | (510) 581-1177 |
| Micro Management Castro Valley 94546 | (510) 538-9414 |
| Op-Net Systems Consultants 5370 Camino Alta Mira # 101, Castro Valley 94546 | (510) 881-5083 |
| Process Systems Intl 17967 Walnut Rd, Castro Valley 94546 | (510) 881-1369 |
| R Creative Computer Solutions 5014 Vannoy Ave, Castro Valley 94546 | (510) 727-1296 |
| Vlahos Associates Po Box 20434, Castro Valley 94546 | (510) 886-8420 |
| W & J Partnership Po Box 2499, Castro Valley 94546 | (510) 583-7751 |