| Business | Phone |
| Abcd Laptops 1073 Foxworth Blvd, Lombard 60148 | (630) 290-1727 |
| 3 Core Systems 1920 S Highland Ave 225, Lombard 60148 | (630) 705-0968 |
| Jett Technologies 850 Foxworth Blvd 303, Lombard 60148 | (630) 267-0482 |
| Job Shop System 1920 S Highland Ave 300, Lombard 60148 | (630) 627-8113 |
| Master Solutions Inc 1263 S Highland Ave, Lombard 60148 | (630) 495-3830 |
| Mc Mahon Baldwin & Assoc 55 W 22nd St, Lombard 60148 | (630) 916-6070 |
| Microsystems 377 E Butterfield Rd 910, Lombard 60148 | (630) 598-1100 |
| Pundit Systems Corp 1009 Beverly Ct, Lombard 60148 | (630) 678-0500 |
| Rincar Technology 204 E Saint Charles Rd, Lombard 60148 | (630) 261-0074 |
| Time Well 1920 S Highland Ave 300, Lombard 60148 | (630) 916-6783 |
| Ultimate Software Consultants 377 E Butterfield Rd 100, Lombard 60148 | (630) 960-2909 |
| Unicon Inc 1920 S Highland Ave, Lombard 60148 | (630) 691-8637 |
| Universal Computer Systems Lombard 60148 | (630) 916-7113 |
| Unlimited Solutions Inc 1920 S Highland Ave 220, Lombard 60148 | (630) 889-2300 |