| Business | Phone |
| 316 East Main 316 Main St, East Setauket 11733 | (631) 689-0644 |
| Air 1 Tech Svc Inc 16 Bayview Ave, East Setauket 11733 | (631) 751-2939 |
| Beth Wagner Designs 25 Bayview Ave, East Setauket 11733 | (631) 689-6676 |
| C & J Performance 91 Gnarled Hollow Rd, East Setauket 11733 | (631) 751-0533 |
| Medi Serve Infommation Systems 100 S Jersey Ave # 31, East Setauket 11733 | (631) 941-9300 |
| Exponent Technologies 143 Gnarled Hollow Rd, East Setauket 11733 | (631) 689-5371 |
| First Strokes Swim Sch 384 Mark Tree Rd, East Setauket 11733 | (631) 689-2861 |
| Haltech Design Po Box 702, East Setauket 11733 | (631) 941-4588 |
| Hotel Business 45 Research Way # 106, East Setauket 11733 | (631) 246-9300 |
| Island Harbour Group Inc 15 Bennetts Rd, East Setauket 11733 | (631) 689-0408 |
| Renaissance Technology Corp 600 Route 25a, East Setauket 11733 | (631) 246-7460 |
| Kmh Associates Inc 214 Lower Sheep Pasture Rd, East Setauket 11733 | (631) 689-2728 |
| Small Cap Network East Setauket 11733 | (631) 246-9017 |
| Society For Preservation N Country Rd, East Setauket 11733 | (631) 941-9715 |
| Tiger Development Corp 16 Hulse Rd, East Setauket 11733 | (631) 331-8502 |
| Valentine Group Inc 80 Comsewogue Rd # A, East Setauket 11733 | (631) 642-1285 |
| Word For Word Typing 82 N Country Rd, East Setauket 11733 | (631) 751-0470 |