| Business | Phone |
| Bay Networks 200 Broadhollow Rd, Melville 11747 | (631) 393-5095 |
| Cisco Systems Inc 1 Huntington Quadrangle, Melville 11747 | (631) 391-2000 |
| Computer Group Inc 1895 Walt Whitman Rd, Melville 11747 | (631) 777-3620 |
| Epoch Data Inc 532 Broadhollow Rd # 104, Melville 11747 | (631) 249-5999 |
| Interworks Systems Inc 1233 Old Walt Whitman Rd, Melville 11747 | (631) 424-9757 |
| Total Computer Systems 1895 Walt Whitman Rd, Melville 11747 | (631) 777-7777 |