| Business | Phone |
| Agility Computer Network Svc 1332 N Halsted St 404, Chicago 60622 | (312) 587-9894 |
| American Computer Networks Inc 223 W Jackson Blvd, Chicago 60606 | (312) 673-0590 |
| Arlex Technologies 30 S Michigan Ave, Chicago 60603 | (312) 870-4490 |
| Asset Management Co 4654 N Kenmore Ave 2n, Chicago 60640 | (773) 878-5150 |
| Ata-Che Corp 311 S Wacker Dr, Chicago 60606 | (312) 697-4796 |
| Axistangent & Technologies 723 W Wrightwood Ave, Chicago 60614 | (773) 388-0538 |
| Belmont Computer Network Inc 2326 W Belmont Ave, Chicago 60618 | (773) 477-7777 |
| Fsg Systems Consulting 6815 W 63rd St, Chicago 60638 | (773) 229-8810 |
| Fourth Floor Development 732 S Financial Pl, Chicago 60605 | (312) 834-9000 |
| Burwood Group Inc 20 N Clark St 1950, Chicago 60602 | (312) 327-4600 |
| Captivate Network 20 N Wacker Dr, Chicago 60606 | (312) 629-4450 |
| Captivate Network 20 S Clark St 1710, Chicago 60603 | (312) 283-4100 |
| Everest Technology 155 N Michigan Ave # 301, Chicago 60601 | (312) 616-4461 |
| Enterasys Networks Inc 8735 W Higgins Rd 200, Chicago 60631 | (773) 399-6000 |
| Dps Data Systems Inc 111 W Washington St, Chicago 60602 | (312) 345-8100 |
| Clyde R Alpert & Assoc Inc 1658 N Milwaukee Ave 171, Chicago 60647 | (773) 489-9986 |
| Computer Men 4330 N Milwaukee Ave, Chicago 60641 | (773) 266-7883 |
| Computer Network Comm 30 S Wacker Dr 600, Chicago 60606 | (312) 648-0095 |
| Computer Onsite 5201 W Argyle St, Chicago 60630 | (773) 481-9889 |
| Computer Servant 615 W Belden Ave, Chicago 60614 | (773) 248-1270 |
| B T Americas 717 S Wells St, Chicago 60607 | (312) 957-1778 |
| Connective Technology Inc 770 N La Salle Dr, Chicago 60610 | (312) 867-7448 |
| Cora Technology Inc 3852 W 80th Pl, Chicago 60652 | (773) 585-5184 |
| Haig & Assoc Ltd 11128 S Western Ave, Chicago 60643 | (773) 239-8768 |