| Business | Phone |
| Computech Corp 2625 Butterfield Rd, Oak Brook 60523 | (630) 928-0085 |
| Infokall Inc 2625 Butterfield Rd, Oak Brook 60523 | (630) 684-0360 |
| Insight 360 Degrees 1211 W 22nd St, Oak Brook 60523 | (630) 368-0409 |
| Intersoft Corp 1200 Harger Rd 421, Oak Brook 60523 | (630) 928-1133 |
| Jds Group Inc 1415 W 22nd St, Oak Brook 60523 | (630) 983-7533 |
| Logic Solutions 1808 Midwest Club Pkwy, Oak Brook 60523 | (630) 789-2982 |
| Modis 2221 Camden Ct 360, Oak Brook 60523 | (630) 573-9888 |
| Palladium Technology Corp 600 Hunter Dr 308, Oak Brook 60523 | (630) 368-9092 |
| Pilot Systems Inc 2311 W 22nd St, Oak Brook 60523 | (630) 572-0936 |
| Q-Tech Comms 2115 Butterfield Rd 200, Oak Brook 60523 | (630) 716-1200 |
| Resource One 701 Harger Rd, Oak Brook 60523 | (630) 954-2824 |
| See Beyond Technology Corp 700 Commerce Dr 500, Oak Brook 60523 | (630) 288-2520 |
| Star Assoc 2021 Midwest Rd, Oak Brook 60523 | (630) 953-8517 |
| Subject Wills & Co 1420 Kensington Rd 110, Oak Brook 60523 | (630) 572-0240 |
| Transportation Management 1301 W 22nd St, Oak Brook 60523 | (630) 574-1590 |
| Tri Net Inc 1301 W 22nd St, Oak Brook 60523 | (630) 963-2700 |
| Trinity Solutions 2001 Midwest Rd 204, Oak Brook 60523 | (630) 916-9084 |
| Webbsofte Technologies Inc 2603 W 22nd St 13, Oak Brook 60523 | (630) 990-9322 |