| Business | Phone |
| Informanus 878 Palmerston Ave, Toronto M6G 2S2 | (416) 537-2579 |
| Keystone Response Management 2200 Yonge St #800, Toronto M4S 2C6 | (416) 932-3561 |
| Mailing List Systems 2200 Yonge St #910, Toronto M4S 2C6 | (416) 480-1747 |
| Totoal Office Prefessional 199 Richmond St W, Toronto M5V 1V3 | (416) 971-4000 |
| Donovan Data Systems Canada 2 St Clair Ave W #1500, Toronto M4V 1L5 | (416) 929-3372 |
| public-sector-lists.com 26-2808 Keele Street, Toronto M3M 2G5 | (416) 630-3679 |