| Business | Phone |
| Alpha Sigma Consulting 625 N North Ct 150, Palatine 60067 | (847) 549-1300 |
| Gauvreau Computing Co 1109 W Skylark Dr, Palatine 60067 | (847) 359-4970 |
| Bwp Tech Inc 1429 E Dorothy Dr, Palatine 60074 | (847) 359-9842 |
| Fenomtek Inc 1613 W Colonial Pkwy, Palatine 60067 | (847) 963-9460 |
| E Access Solutions Inc 407 N Quentin Rd, Palatine 60067 | (847) 991-7190 |