| Business | Phone |
| Spacient Technologies 17645 Chatsworth St, Granada Hills 91344 | (213) 612-7734 |
| A T Disk Co 11451 White Oak Ave, Granada Hills 91344 | (818) 773-8110 |
| Owl Software Information Granada Hills 91344 | (818) 832-5866 |
| P E Tech Software Tools & Svc Granada Hills 91344 | (818) 363-6646 |