| Business | Phone |
| Donatech Corp 2094 185th St, Fairfield 52556 | (641) 472-7474 |
| L D Software 500 N 3rd St # 210, Fairfield 52556 | (641) 472-7750 |
| Micro Management Consultants 706 S 2nd St, Fairfield 52556 | (641) 472-9250 |
| Nordtech Research Inc Fairfield 52556 | (641) 472-7820 |