| Business | Phone |
| Compucoach Inc 437 Webster Ave, Elmhurst 60126 | (630) 516-1207 |
| Daan Consulting Inc 188 W Industrial Dr, Elmhurst 60126 | (630) 516-3225 |
| Dupage Senior Help Desk Elmhurst 60126 | (630) 279-4104 |
| Wheeler Consulting Inc 199 W Diversey Ave, Elmhurst 60126 | (630) 782-5827 |