| Business | Phone |
| Advanced Data Engineering Inc 1310 Redwood Way, Petaluma 94954 | (707) 794-7000 |
| Bias 1370 Industrial Ave, Petaluma 94952 | (707) 782-1866 |
| Hwn Assoc Process Engrs 1309 1/2 D Street Ext, Petaluma 94952 | (707) 763-7010 |
| Knowledge Point 1129 Industrial Ave, Petaluma 94952 | (707) 762-0375 |
| Layer 2 Software 921 Transport Way, Petaluma 94954 | (707) 781-7342 |
| Npi Software 338 English St, Petaluma 94952 | (707) 778-1342 |
| Pacific Software Design 7 4th St, Petaluma 94952 | (707) 782-0205 |
| Sierra Enterprises Po Box 5325, Petaluma 94955 | (707) 765-6051 |
| Tucker Harper Enterprises Inc 800 Baywood Dr # E, Petaluma 94954 | (707) 769-0223 |
| Ultraquest 1856 Adobe Creek Dr, Petaluma 94954 | (707) 773-2923 |