| Business | Phone |
| Halcyon Networks Po Box 1891, Danville 94526 | (510) 893-8330 |
| Brentford Technologies 40 Edinburgh Pl, Danville 94526 | (925) 831-9666 |
| C & C Engineering Po Box 2934, Danville 94526 | (925) 820-8000 |
| Computer Cite 136 Windover Dr, Danville 94506 | (925) 837-3825 |
| Crew Noble Information Svc 323 El Pintado Heights Dr, Danville 94526 | (925) 837-1399 |
| Fishman Consulting Group 185 Front St # 203, Danville 94526 | (925) 743-8300 |
| Halcyon Networks Po Box 1891, Danville 94526 | (925) 736-3510 |
| Mph Systems Inc Danville 94506 | (925) 964-9300 |
| Nelson Technology Assoc 1051 Hill Meadow Pl, Danville 94526 | (925) 855-3610 |
| Psp Enterprises 1159 Cheshire Cir, Danville 94506 | (925) 648-1901 |
| Related Developments Danville 94506 | (925) 736-0526 |
| Saul International 382 Everett Pl, Danville 94526 | (925) 855-0847 |
| Soule Software Corp 4185 Blackhawk Plaza Cir # 100, Danville 94506 | (925) 648-0230 |
| Stuart Thompson Assoc 155 Remington Dr, Danville 94526 | (925) 831-2400 |
| Sturla Design 600 Logan Ln, Danville 94526 | (925) 837-9398 |