| Business | Phone |
| Advanced Marketing Systems 1077 Bridgeport Ave # C, Shelton 6484 | (203) 929-2223 |
| Valassis Relationship Mktg 6 Armstrong Rd # 3, Shelton 6484 | (203) 225-1300 |
| Scorekeeper Marketing Llc 6 Philip Dr, Shelton 6484 | (203) 929-2229 |
| Catalina Marketing Corp 875 Bridgeport Ave, Shelton 6484 | (203) 944-0341 |
| Productivity Inc 100 Commerce Dr # 120, Shelton 6484 | (203) 225-0451 |
| Parker Kalon 50 Shelton Technology Ctr, Shelton 6484 | (203) 944-1711 |