| Business | Phone |
| Fanahan's Farm Products 9406 W Manhattan Monee Rd, Frankfort 60423 | (815) 464-6958 |
| Compushare 8158 Old Mill Rd, Frankfort 60423 | (815) 212-0100 |
| Sound Decisions 571 Aberdeen Rd, Frankfort 60423 | (815) 469-7009 |
| Therrien Industrial Consulting 21935 Emily Ln, Frankfort 60423 | (815) 469-8860 |