| Business | Phone |
| Daniel J Lobner 96 W Moreland Ave, Addison 60101 | (630) 628-1580 |
| G E Co Computer Numerical 2171 W Executive Dr, Addison 60101 | (630) 932-6022 |
| Information Services Of Il 2055 W Army Trail Rd 112, Addison 60101 | (630) 889-4055 |
| Thatcher Technology 350 S Rohlwing Rd 200, Addison 60101 | (630) 691-1934 |
| Uni Computers 1433 W Fullerton Ave, Addison 60101 | (630) 627-9999 |