| Business | Phone |
| Grove Hill Systems Group 1611 Barclay Blvd, Buffalo Grove 60089 | (847) 215-2010 |
| Pc Support Buffalo Grove 60089 | (847) 229-1906 |
| Sherlock Systems 1584 Barclay Blvd, Buffalo Grove 60089 | (847) 520-7711 |
| Svetkaz 660 Aberdeen Ln, Buffalo Grove 60089 | (847) 459-3577 |
| Toca Computer Corp Buffalo Grove 60089 | (847) 630-7066 |