| Business | Phone |
| Meta 4 Imaging Inc 154 Littleton Rd, Harvard 1451 | (978) 456-3500 |
| Topcall 105 Brown Rd, Harvard 1451 | (978) 456-8412 |
| Stephen J Darby Office 8 Ayer Rd, Harvard 1451 | (978) 456-8150 |
| Stratbridge Inc 249 Ayer Rd, Harvard 1451 | (978) 772-4546 |
| Corecentric Inc 41 Ann Lee Rd, Harvard 1451 | (978) 772-7852 |
| Corliss Associates Inc 182 Ayer Rd, Harvard 1451 | (978) 456-6866 |
| Quanterra Inc 325 Ayer Rd, Harvard 1451 | (978) 772-7429 |
| Harshbarger D 310 Ayer Rd, Harvard 1451 | (978) 772-9202 |
| Harvard Design Group Harvard 1451 | (978) 456-6856 |
| Hayward Scott Senior Campus 5 Elm St, Harvard 1451 | (978) 456-7300 |
| F J Catalano Enterprises 188 Ayer Rd, Harvard 1451 | (978) 456-2300 |