| Business | Phone |
| Hedrick Systems Group 200 E Saint Charles Rd, Elmhurst 60126 | (630) 834-6635 |
| Integrated Technology 977 N Oaklawn Ave 100, Elmhurst 60126 | (630) 516-0860 |
| Meridian Business Solutions 637 Berkley Ave, Elmhurst 60126 | (630) 834-6020 |
| Micro Management S571 Cedar Ave, Elmhurst 60126 | (630) 617-5500 |
| Midwest Technology Svc 531 W Wrightwood Ave, Elmhurst 60126 | (630) 782-9494 |
| Peak Network Performance 110 Schiller St, Elmhurst 60126 | (630) 833-7210 |
| Systems Consulting Inc 669 Edgewood Ave, Elmhurst 60126 | (630) 941-3466 |
| Toomey Empty Co Inc 183 Maple Ave, Elmhurst 60126 | (630) 832-8773 |
| Whitestar Technologies Inc 865 Fairfield Ave, Elmhurst 60126 | (630) 834-9511 |