| Business | Phone |
| Best Computer Systems 113 Fairfield Way 202, Bloomingdale 60108 | (630) 893-9210 |
| Lead Software Inc 1 Tiffany Pt 100, Bloomingdale 60108 | (630) 351-5155 |
| Ohb Inc 7 W Schaumburg Rd, Bloomingdale 60108 | (630) 980-0760 |
| Port Inc 486 Muscovy Ln, Bloomingdale 60108 | (630) 671-1002 |
| Sigmatek Corp 127 N Hampshire Ct, Bloomingdale 60108 | (630) 295-9767 |
| Software Etc 818 Stratford Square Mall, Bloomingdale 60108 | (630) 893-3370 |