| Business | Phone |
| Phoenix Data Processing 645 Blackhawk Dr, Westmont 60559 | (630) 654-4400 |
| Presentation Group 210 N Cass Ave A, Westmont 60559 | (630) 353-1300 |
| Quest Group Inc 750 Pasquinelli Dr 228, Westmont 60559 | (630) 986-4500 |
| Webwrite Consulting 102 S Washington St, Westmont 60559 | (630) 322-8840 |