| Business | Phone |
| Wildcat Computer Co Inc 108 North Ave, Haverhill 1830 | (978) 373-1801 |
| Bay State Toner 35 Saltonstall Rd, Haverhill 1830 | (978) 374-1740 |
| Systems Services Inc 229 Primrose St, Haverhill 1830 | (978) 521-0088 |
| Covenant Computers Etc 93 Hilldale Ave, Haverhill 1832 | (978) 372-7113 |
| Megahertz-Computer Inc 105 S Main St, Haverhill 1835 | (978) 374-9677 |
| Line Technologies Co 1181 Boston Rd, Haverhill 1835 | (978) 556-1555 |