| Business | Phone |
| Insight Enterprises Inc 444 Scott Dr, Bloomingdale 60108 | (630) 924-6700 |
| K Leahy & Assoc Bloomingdale 60108 | (630) 351-8961 |
| Ksi Corp 303 E Army Trail Rd, Bloomingdale 60108 | (630) 980-1111 |
| Kuppan Systems Intl Corp 201 E Army Trail Rd, Bloomingdale 60108 | (630) 980-7038 |
| Micro Pc Doctor Po Box 525, Bloomingdale 60108 | (630) 673-6066 |
| Software Analysis Corp 132 W Lake St, Bloomingdale 60108 | (630) 825-6400 |