| Business | Phone |
| Apex Computing Solutions Inc 1725 Johnson Dr, Normal 61761 | (309) 862-2739 |
| Starlight Software Systems Inc Po Box 37, Normal 61761 | (309) 454-7349 |
| Systems On 208 Robert Dr, Normal 61761 | (309) 452-3775 |
| Technisource 328 Susan Dr # 100, Normal 61761 | (309) 637-0664 |