| Business | Phone |
| Management Synergistics 110 Ambleside Dr, Port Perry L9L 1B4 | (905) 985-3144 |
| Peter Vasos & Assoc 159 Waterbury Cres, Port Perry L9L 1S3 | (905) 982-0551 |
| Systems Approach Strategies 180 Mary St, Port Perry L9L 1C4 | (905) 985-2955 |
| Business Solutions Group 64 John St, Port Perry L9L 1J4 | (905) 982-0450 |