| Business | Phone |
| Rubicon Group Ltd 125 Windsor Dr 118, Oak Brook 60523 | (630) 574-7766 |
| Computer Sales Intl 1415 W 22nd St Tower, Oak Brook 60523 | (630) 684-2313 |
| I2 Midwest 1420 Kensington Rd 110, Oak Brook 60523 | (630) 799-6620 |
| Informatica Corp 1415 W 22nd St, Oak Brook 60523 | (630) 684-2253 |
| Interwold Corp 1415 W 22nd St, Oak Brook 60523 | (630) 645-3800 |
| Kinney & Assoc 2625 Butterfield Rd 123w, Oak Brook 60523 | (630) 472-9660 |
| Lansa Usa Inc 1520 Kensington Rd, Oak Brook 60523 | (630) 954-5873 |
| Lke 2021 Midwest Rd, Oak Brook 60523 | (630) 953-8538 |
| Maxil Technology Solutions Inc 2625 Butterfield Rd 316w, Oak Brook 60523 | (630) 472-7335 |
| Midrange Soultions 2021 Midwest Rd 102, Oak Brook 60523 | (630) 953-9537 |
| Mountain Computer Inc 2021 Midwest Rd, Oak Brook 60523 | (630) 953-8557 |
| Performance Software 1415 W 22nd St, Oak Brook 60523 | (630) 684-2380 |
| Pinnacle Talent Inc 1919 Midwest Rd 210, Oak Brook 60523 | (630) 629-4900 |
| Progress Software 2215 York Rd 310, Oak Brook 60523 | (630) 990-1450 |
| Qsrsoft Oak Brook 60523 | (630) 357-6377 |
| Roger Cantu & Assoc 1100 Jorie Blvd, Oak Brook 60523 | (630) 573-9215 |
| Scopus Technology Inc 1415 W 22nd St, Oak Brook 60523 | (630) 684-2320 |
| Sesame Technology 700 Commerce Dr, Oak Brook 60523 | (630) 288-2701 |
| Solid Information Technology 700 Commerce Dr, Oak Brook 60523 | (630) 288-4920 |
| Strategic Staffing Solutions 1415 W 22nd St 280, Oak Brook 60523 | (630) 571-0012 |
| Stratum Global 2001 Midwest Rd, Oak Brook 60523 | (630) 424-0330 |
| Tandy Computers 1600 16th St, Oak Brook 60523 | (630) 472-6640 |