| Business | Phone |
| Advanced Time Recording 5362 Caleb Dr, Columbus 43220 | (614) 457-0329 |
| Wci Time Clock Systems 2505 Englewood Dr, Columbus 43219 | (614) 416-2670 |
| Columbus Time Recorder Co 829 S Front St, Columbus 43206 | (614) 449-4177 |
| National Time Systems 4146 Maize Rd, Columbus 43224 | (614) 262-4222 |
| Kronos Inc 4449 Easton Way # 330, Columbus 43219 | (614) 528-2200 |