| Business | Phone |
| Aalta Solutions 847 B St, Petaluma 94952 | (707) 763-3055 |
| Cartesian Systems 510 2nd St, Petaluma 94952 | (707) 763-9810 |
| Circle Systemation Petaluma 94952 | (707) 778-9068 |
| Commerce Solutions Inc 7 4th St # 46, Petaluma 94952 | (707) 773-1198 |
| Eta Accounting Software Spec 1304 Southpoint Blvd, Petaluma 94954 | (707) 762-1225 |
| Galecia Group 15 Old Creek Rd, Petaluma 94952 | (707) 763-6869 |
| Gnostus Inc 24 Western Ave, Petaluma 94952 | (707) 763-6050 |
| Harmonix Software Inc 1037 Country Club Dr, Petaluma 94952 | (707) 769-7840 |
| Sas Information & Comm Tech 2 Pelican Ct, Petaluma 94954 | (707) 762-7939 |
| Vega Enterprises 401 7th St, Petaluma 94952 | (707) 765-1652 |