Central Insurance Associates
- American Modern Insurance Group
- Andover Companies
- Concord Group Insurance
- Eastern Alliance
- Foremost
- Hanover
- Liberty Mutual
- MAPFRE
- Merchants Insurance Group
- MMG
- Ohio Mutual
- Patriot
- Plymouth Rock Assurance
- Progressive
- Providence Mutual
- Safeco
- Safety
- Travelers
- Union Mutual
- Vermont Mutual Insurance Group